Anti-loosening device for bayonet connector

Abstract

The present invention provides a loosening prevention device for a bayonet connector, comprising: a housing; a connecting nut sleeved outside the housing; a corrugated spring disposed between the housing and the connecting nut; a loosening prevention nut provided on the outer side of the non-docking end of the connecting nut; and a steel ball assembly disposed between the loosening prevention nut and the connecting nut. After the plug and the socket are connected in place, by rotating the loosening prevention nut of the device, the plug is in a locked state, which can effectively prevent the plug and the socket from becoming loose, and improves the connection reliability of the bayonet connector in a vibration and impact environment.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-loosening devices, and particularly to an anti-loosening device for a bayonet connector. Background Art

[0002] Bayonet connectors are widely used. The insertion is achieved through the rotational connection between the plug connection nut arc groove and the socket staple, and a sinking amount is provided in the connection nut staple hole, and the locking after connection is achieved by the elastic force of the corrugated spring. However, when used in high-vibration and impact environments, there is still a problem that the connection nut disengages from the sinking amount of the staple hole, resulting in the disconnection between the plug and the socket. Summary of the Invention

[0003] In view of this, the embodiments of the present specification provide an anti-loosening device for a bayonet connector to achieve the purpose of avoiding connection failure.

[0004] The embodiments of the present specification provide the following technical solutions: An anti-loosening device for a bayonet connector, comprising: a housing; a connection nut sleeved outside the housing; a corrugated spring disposed between the housing and the connection nut; an anti-loosening nut disposed outside the non-docking end of the connection nut; and a steel ball assembly disposed between the anti-loosening nut and the connection nut.

[0005] Further, a plurality of radially penetrating through holes are provided in the middle of the connection nut, and a plurality of arc grooves are provided on the inner wall of the connection nut, and the end of each arc groove is connected to a through hole in a one-to-one correspondence.

[0006] Further, the connection nut has a large-diameter end and a small-diameter end, and a plurality of tapered holes and a plurality of kidney-shaped holes are provided along the circumferential direction of the small-diameter end, and the steel ball assembly includes a first steel ball, and one first steel ball is disposed in each tapered hole.

[0007] Further, a plurality of end face round holes are provided at the step surface between the small-diameter end and the large-diameter end, and the steel ball assembly includes a second steel ball, and one second steel ball is disposed in each end face round hole.

[0008] Further, a plurality of circular grooves are provided on the inner wall of the anti-loosening nut, and the plurality of circular grooves are in one-to-one correspondence and communication with the plurality of tapered holes.

[0009] Further, the anti-loosening nut is provided with a plurality of radially penetrating cylindrical pin holes, and the plurality of cylindrical pin holes are in one-to-one correspondence and communication with the plurality of kidney-shaped holes.

[0010] Further, a plurality of groups of ratchet teeth are provided on the end wall of the anti-loosening nut, and the plurality of groups of ratchet teeth are in one-to-one correspondence with the plurality of end face round holes.

[0011] Further, each group of ratchet teeth includes two ratchet tooth units, and an included angle is provided between adjacent two ratchet tooth units.

[0012] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above technical solutions adopted in the embodiments of this specification at least include: after the plug is connected to the socket in place, by rotating the locknut of the device, the plug is in a locked state, which can effectively prevent the plug and the socket from becoming loose, and improve the connection reliability of the bayonet connector in a vibration and impact environment. Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 Structural schematic diagram of the anti-loosening device;

[0015] Figure 2 is Figure 1 cross-sectional view of;

[0016] Figure 3 Structural schematic diagram of the connection nut;

[0017] Figure 4 Structural schematic diagram of the locknut;

[0018] Figure 5 Structural schematic diagram of the housing;

[0019] Figure 6 Schematic diagram of the included angle of the center line of the waist-shaped hole of the connection nut;

[0020] Figure 7 Schematic diagram of the included angle of the ratchet teeth of the locknut;

[0021] Figure 8 Schematic diagram of the connection and locking of the plug and socket.

[0022] Reference numerals in the drawings: 1, housing; 2, connection nut; 3, corrugated spring; 4, locknut; 5, first steel ball; 6, snap ring; 7, second steel ball; 8, spring; 9, cylindrical pin; 10, socket; 11, convex key; 12, cylindrical groove; 13, groove; 20, plug; 21, through hole; 22, arc-shaped groove; 23, tapered hole; 24, waist-shaped hole; 25, end face round hole; 41, round groove; 42, cylindrical pin hole; 43, ratchet teeth. Detailed Embodiments

[0023] The embodiments of the present application will be described in detail below with reference to the drawings.

[0024] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0025] As Figures 1 to 8 shown, an anti-loosening device for a bayonet connector provided by an embodiment of the present invention mainly includes a housing 1, a connection nut 2, a corrugated spring 3, an anti-loosening nut 4, a first steel ball 5, a snap ring 6, a second steel ball 7, a spring 8 and a cylindrical pin 9. The connection nut 2, the corrugated spring 3 and the anti-loosening nut 4 are sleeved outside the housing 1. The corrugated spring 3 is placed between the housing 1 and the connection nut 2. The anti-loosening nut 4 is placed at the non-docking end of the connection nut 2 and is sleeved outside the connection nut 2. The first steel ball 5, the second steel ball 7 and the spring 8 are placed between the anti-loosening nut 4 and the connection nut 2. The cylindrical pin 9 is installed inside the anti-loosening nut 4, and the snap ring 6 is located at the non-docking end of the connection nut 2.

[0026] After the plug and the socket are connected in place, by rotating the anti-loosening nut 4 of the device, the plug is in a locked state, which can effectively prevent the plug and the socket from becoming loose, and improves the connection reliability of the bayonet connector in a vibration and impact environment.

[0027] As Figure 3 shown, the connection nut 2 is provided with a spiral arc groove 22, a through hole 21, an end face round hole 25, a tapered hole 23 and an oval hole 24. Among them, the spiral arc groove 22 is located inside one end of the connection nut 2, and the end section of the arc spiral groove 22 is connected to the through hole 21. The spiral arc groove 22 and the through hole 21 are evenly distributed in three on the circumference of the connection nut 2 to realize the connection with the docking socket. One end of the outside of the connection nut 2 has a large diameter and one end has a small diameter. The tapered hole 23 and the oval hole 24 are distributed on the circumference of the small diameter. The tapered hole 23 is evenly distributed in three on the circumference, and the oval hole 24 is evenly distributed in two. The end face round holes 25 are evenly distributed on the end face of the connection nut 2, and the axis of the end face round hole 25 is parallel to the axis of the connection nut 2.

[0028] As Figure 4 shown, the anti-loosening nut 4 is provided with a circular groove 41, a cylindrical pin hole 42 and ratchet teeth 43. Among them, the circular groove 41 is located inside the diameter of the anti-loosening nut 4 and is evenly distributed in three on the circumference; the ratchet teeth 43 are located on the end face of the anti-loosening nut 4. Among them, two ratchet tooth units form a group of ratchet teeth 43, and the adjacent two ratchet tooth units are separated by a certain angle. Three groups of ratchet teeth 43 are evenly distributed on the circumference of the anti-loosening nut 4.

[0029] As Figure 5 shown, the housing 1 is provided with a convex key 11, a cylindrical groove 12 and a groove 13. Among them, the convex key 11 is located outside one end of the housing 1; the cylindrical groove 12 is located outside the housing 1 and is evenly distributed in three on the circumference. One of the cylindrical grooves 12 forms an angle of 180° with the position of the convex key 11; the groove 13 is located at the other end of the housing 1.

[0030] The spring 8 and the second steel ball 7 are installed in the circular hole 25 of the end surface of the connecting nut 2, and the other end of the second steel ball 7 is placed in the ratchet 43 of the anti-loosening nut 4 to increase the resistance to the relative rotation of the anti-loosening nut 4 and the connecting nut 2.

[0031] Three first steel balls 5 are evenly distributed around the circumference and placed within the tapered hole 23 of the connecting nut 2. The larger end of the tapered hole 23 allows the first steel balls 5 to enter, while the smaller end prevents them from completely exiting. However, the first steel balls 5 can partially emerge from the smaller end. The cylindrical surface formed on the inner wall of the locknut 4 restricts the first steel balls 5 from emerging from the larger end of the tapered hole 23 while allowing them to emerge from the smaller end. The circular groove 41 of the locknut 4 provides space to keep the first steel balls 5 within the tapered hole 23 without emerging from the smaller end.

[0032] The cylindrical pin 9 passes through the waist-shaped hole 24 of the connecting nut 2 and is fixed in the cylindrical pin hole 42 of the locking nut 4 by riveting. Figure 6 and Figure 7 As shown, the centerline angle α of each waist-shaped hole 24 of the connecting nut 2 is set to 15°, which is the same as the angle between the two ratchet teeth 43 of the anti-loosening nut 4. This achieves axial limitation of the anti-loosening nut 4 on the connecting nut 2 and allows relative rotation within a 15° angle.

[0033] The bayonet connector anti-loosening device of the present invention is configured such that the first steel ball 5 is placed in the circular groove 41 of the anti-loosening nut 4 in the unlocked state and can move axially in the tapered hole 23 of the connecting nut 2. Figure 8 The figure shows the locked state after the plug 20 and the socket 10 are connected. After the plug 20 and the socket 10 are connected, the lock nut 4 is further rotated so that the first steel ball 5 is in contact with the cylindrical surface of the lock nut 4. The cylindrical surface restricts the axial movement of the first steel ball 5 within the tapered hole 23 and the first steel ball 5 is sent into the cylindrical groove 12 of the housing 1. At this time, the first steel ball 5 prevents the connecting nut 2 and the housing 1 from rotating relative to each other, thereby preventing the plug 20 from loosening after the connection with the socket 10 is completed.

[0034] Furthermore, in order to prevent the connecting nut 2 and the anti-loosening nut 4 from rotating relative to each other, an anti-loosening device is provided between the connecting nut 2 and the anti-loosening nut 4. The spring 8 in the connecting nut 2, the second steel ball 7 and the ratchet 43 on the anti-loosening nut 4 constitute the device. When the anti-loosening nut 4 and the connecting nut 2 rotate relative to each other, the second steel ball 7 needs to slide out along the inclined surface of the ratchet 43, and form a resistance to prevent relative rotation under the action of the elastic force of the spring 8.

[0035] The above are only specific embodiments of the present invention, and the scope of the invention cannot be limited thereby. Therefore, the replacement of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of the present invention shall still fall within the scope covered by this patent. In addition, the technical features, technical features and technical solutions, and technical solutions and technical solutions in the present invention can be freely combined and used.

Claims

1. A bayonet connector anti-loosening device, characterized in that, Comprising: A housing (1); A connecting nut (2), sleeved outside the housing (1); A corrugated spring (3), disposed between the housing (1) and the connecting nut (2); A locknut (4), arranged outside the non-docking end of the connecting nut (2); A steel ball assembly, arranged between the locknut (4) and the connecting nut (2); Multiple radially penetrating through-holes (21) are provided in the middle of the connecting nut (2), and multiple spiral arc grooves (22) are provided on the inner wall of the connecting nut (2), and the end of each spiral arc groove (22) is connected to a through-hole (21) in a one-to-one correspondence; The connecting nut (2) has a large-diameter end and a small-diameter end, and multiple tapered holes (23) and multiple kidney-shaped holes (24) are arranged along the circumferential direction of the small-diameter end. The steel ball assembly includes a first steel ball (5), and one first steel ball (5) is arranged in each tapered hole (23); Multiple end-face round holes (25) are provided at the step surface between the small-diameter end and the large-diameter end. The steel ball assembly includes a second steel ball (7), and one second steel ball (7) is arranged in each end-face round hole (25); Multiple circular grooves (41) are provided on the inner wall of the locknut (4), and the multiple circular grooves (41) are in one-to-one correspondence and communication with the multiple tapered holes (23); The locknut (4) is provided with multiple radially penetrating cylindrical pin holes (42), and the multiple cylindrical pin holes (42) are in one-to-one correspondence and communication with the multiple kidney-shaped holes (24).

2. The anti-loosening device for the bayonet connector according to claim 1, wherein Multiple groups of ratchet teeth (43) are provided on the end wall of the locknut (4), and the multiple groups of ratchet teeth (43) are in one-to-one correspondence with the multiple end-face round holes (25) in position.

3. The anti-loosening device for a bayonet connector according to claim 2, wherein, Each group of ratchet teeth (43) includes two ratchet tooth units, and there is an included angle between adjacent two of the ratchet tooth units.

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