License plate fixing and sealing device

Abstract

The utility model relates to a license plate fixing and sealing device, and belongs to the technical field of license plate fixing and sealing devices. The license plate fixing and sealing device comprises a bolt; the inner nut is installed at the tail end of the bolt in a threaded mode. The inner abutting piece is arranged on the bolt in a sleeving mode and located on the side, away from the tail end of the bolt, of the inner nut; the outer abutting piece is provided with a threaded part with the screwing direction opposite to that of the threaded groove of the inner nut, and the outer abutting piece is installed at the tail end of the bolt and abuts against the outer side end of the inner nut. According to the license plate fixing and sealing device, the outer abutting piece is arranged at the tail end of the bolt, the outer abutting piece is screwed on the bolt in the direction opposite to the screwing-in direction of the inner nut, and the outer abutting piece and the inner nut are kept in the abutting state, so that the inner nut is effectively prevented from rotating in the direction of screwing out of the bolt, and the situation that the inner nut loosens and falls off from the bolt is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of license plate fixing and sealing devices, in particular to a license plate fixing and sealing device. Background Art

[0002] Non-motor vehicles generally refer to vehicles with less than four wheels that are not powered by engines and can be driven on roads. Drivers of non-motor vehicles on roads must comply with relevant traffic safety regulations. Non-motor vehicles need to be registered before they can be driven on roads. When fixing the license plate to the non-motor vehicle, a sealing device with an anti-theft function will be used to fix the license plate.

[0003] The traditional sealing device includes a buckle cover, a base, a retaining spring, a bolt, a gasket and an inner nut. When the buckle cover and the base are buckled together, the retaining spring is inserted into the internal groove of the buckle cover to fix it, and the inner nut is installed on the inner end of the bolt for locking. However, when an electric vehicle encounters bumpy roads or roads with large vibrations during actual driving, the connection between the inner nut and the bolt is easily loosened, and the inner nut may even fall off the bolt. Utility Model Content

[0004] Based on this, it is necessary to provide a license plate sealing device that can prevent the screws from falling off in order to solve the above technical problems.

[0005] The utility model provides a license plate fixing device, comprising:

[0006] bolt;

[0007] An internal nut, threadedly mounted on the rear end of the bolt;

[0008] An inner abutment piece is sleeved on the bolt and is located on a side of the inner nut away from the rear end of the bolt;

[0009] The outer abutment has a threaded portion with a screw thread direction opposite to that of the screw thread of the inner nut, is installed at the rear end of the bolt, and abuts against the outer end of the inner nut.

[0010] In one of the embodiments, the inner resistance member includes a gasket and a first resistance increasing member, wherein the first resistance increasing member is located on the gasket, and the first resistance increasing member abuts against the inner nut to increase the resistance of the inner nut being screwed out of the bolt.

[0011] In one embodiment, the outer abutment member comprises an outer nut, and the outer nut and the inner nut are screwed onto the bolt in opposite directions.

[0012] In one embodiment, the outer resistance member also includes a first buckle cover, the first buckle cover penetrates the surface of the bolt to form a through hole, and one end of the first buckle cover adjacent to its circumferential edge is divided to form a bending claw, and the bending claw has a bending portion protruding outward, and the outer end of the bending claw can swing along the radial direction of the first buckle cover.

[0013] In one of the embodiments, the inner wall of the first buckle cover forming the through hole has a second resistance increasing member, and the second resistance increasing member is used to increase the friction between the abutting surface of the outer nut and the first buckle cover.

[0014] In one embodiment, the gasket extends from its edge in the width direction to form a first buckle ring, the inner diameter of the first buckle ring matches the outer diameter of the first buckle cover, and the inner wall of the first buckle ring has an inner buckle portion that matches the shape of the bent portion.

[0015] In one of the embodiments, the outer resistance member also includes a second buckle cover, which penetrates through the surface of the bolt to form a penetration hole, and a clamping spring is installed on the inner wall of the penetration hole formed by the second buckle cover, and the end of the clamping spring facing away from the penetration hole abuts against the outer nut to prevent the outer nut from being screwed out of the bolt.

[0016] In one of the embodiments, the gasket extends from its edge in the width direction to form a second buckle ring, and the second buckle ring is threadedly connected to an end of the second buckle cover away from the through hole.

[0017] The above-mentioned license plate sealing device, by setting an outer resistance piece at the end of the bolt, screwing the outer resistance piece onto the bolt in the direction opposite to the direction in which the inner nut is screwed in, and keeping it in a tight state with the inner nut, thereby forming resistance to the rotation of the inner nut in the direction of unscrewing the bolt, reducing the occurrence of the inner nut loosening and falling off from the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A cross-sectional view of a license plate fixing device according to an embodiment;

[0020] Figure 2 for Figure 1 Exploded diagram of Chinese and foreign parts;

[0021] Figure 3 for Figure 2A schematic diagram of the structure of the middle gasket, the first resistance-increasing member and the first buckle ring;

[0022] Figure 4 A cross-sectional view of a license plate fixing device according to an embodiment;

[0023] Figure 5 for Figure 4 Exploded diagram of Chinese and foreign parts.

[0024] Reference numerals:

[0025] 110. Bolt; 120. Inner nut; 130. Inner push piece; 132. Gasket; 134. First resistance increasing piece; 136. First buckle ring; 138. Second buckle ring; 140. Outer push piece; 142. Outer nut; 144. First buckle cover; 141. Bending claw; 143. Second resistance increasing piece; 146. Second buckle cover; 145. Tightening spring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0027] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the utility model are for illustrative purposes only and do not represent the only implementation method.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Unless otherwise defined, all technical and scientific terms used in the specification of the present utility model have the same meaning as those commonly understood by technicians in the technical field of the present utility model. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used in the specification of the present utility model includes any and all combinations of one or more related listed items.

[0031] Combine the following Figure 1-Figure 5 The utility model describes a license plate fixing and sealing device.

[0032] like Figure 1 As shown, in one embodiment, a license plate fixing device includes a bolt 110 , an inner nut 120 , an inner abutment 130 and an outer abutment 140 .

[0033] The inner nut 120 is threadedly mounted on the rear end of the bolt 110. Specifically, the inner nut 120 is tightened on the bolt 110 to lock the license plate on its corresponding license plate fixing seat.

[0034] The inner abutment 130 is sleeved on the bolt 110 and is located on the side of the inner nut 120 away from the rear end of the bolt 110. Specifically, the surface area of ​​the inner abutment 130 parallel to the radial direction of the bolt 110 is larger than the surface area of ​​the inner nut 120 parallel to the radial direction of the bolt 110.

[0035] The outer abutment 140 has a threaded portion with a screw groove opposite to the screw groove of the inner nut 120, is installed at the rear end of the bolt 110, and abuts against the outer end of the inner nut 120. Specifically, the outer abutment 140 is arranged at the end of the bolt 110 to prevent the inner nut 120 from falling off from the end of the bolt 110.

[0036] Specifically, when fixing the license plate, the bolt 110 is passed through the license plate, the license plate fixing seat and the inner resisting member 130 in sequence, and then the inner nut 120 is screwed in, so that the inner nut 120 presses the inner resisting member 130 against the side of the license plate fixing seat, and then the outer resisting member 140 is rotated and screwed onto the bolt 110 in the direction opposite to the screwing-in direction of the inner nut 120, and its position on the bolt 110 is adjusted so that the outer resisting member 140 and the inner nut 120 are kept in a tight state, and the friction force generated by the mutual engagement of the threaded portion and the thread on the bolt 110, combined with the tight state of the inner nut 120 and the outer resisting member 140, is used to prevent the inner nut 120 from rotating in the direction of screwing out the bolt 110.

[0037] The license plate fixing device of this embodiment provides an outer resistance member 140 at the end of the bolt 110, and screws the outer resistance member 140 onto the bolt 110 in a direction opposite to the screw-in direction of the inner nut 120, and keeps the outer resistance member 140 in a tight state with the inner nut 120, and utilizes the friction force generated by the engagement between the threaded portion and the thread of the bolt 110, combined with the friction on the abutment surface between the inner nut 120 and the outer resistance member 140, to form resistance to the rotation of the inner nut 120 in the direction of screwing out the bolt 110, thereby reducing the occurrence of the inner nut 120 loosening and falling off from the bolt 110.

[0038] like Figure 2 and Figure 3 As shown, in one embodiment, the inner abutment 130 includes a gasket 132 and a first resistance increasing member 134 . The first resistance increasing member 134 is located on the gasket 132 . The first resistance increasing member 134 abuts against the inner nut 120 to increase the resistance of the inner nut 120 to be screwed out of the bolt 110 .

[0039] Optionally, the first resistance increasing member 134 is an uneven friction surface formed on both side surfaces of the gasket 132 , or is a rubber pad installed on both side surfaces of the gasket 132 .

[0040] Optionally, in order to simplify the installation steps, the gasket 132 and the inner nut 120 are fixed together by welding.

[0041] The outer abutment member 140 includes an outer nut 142 , and the outer nut 142 and the inner nut 142 are screwed onto the bolt 110 in opposite directions.

[0042] The outer resistance member 140 also includes a first buckle cover 144, which penetrates the surface of the first buckle cover 144 corresponding to the bolt 110 to form a through hole, and one end of the first buckle cover 144 adjacent to its circumferential edge is divided to form a bending claw 141, and the bending claw 141 has a bending portion protruding outward, and the outer end of the bending claw 141 can swing along the radial direction of the first buckle cover 144.

[0043] A second resistance increasing member 143 is disposed on the inner wall of the through hole formed in the first buckle cover 144 . The second resistance increasing member 143 is used to increase the friction between the abutting surfaces of the outer nut 142 and the first buckle cover 144 .

[0044] Optionally, the second resistance increasing member 143 is an uneven friction surface formed on the inner wall of the first buckle cover 144 with a through hole, or is a rubber ring installed on the inner wall of the first buckle cover 144 with a through hole.

[0045] The gasket 132 extends from its edge in the width direction to form a first buckle ring 136. The inner diameter of the first buckle ring 136 matches the outer diameter of the first buckle cover 144. The inner wall of the first buckle ring 136 has an inner buckle portion that matches the shape of the bent portion (see Figure 3 ).

[0046] Specifically, when fixing the bolt 110 to the license plate fixing seat, the bolt 110 is passed through the license plate and the license plate fixing seat in sequence, the gasket 132 is passed through the bolt 110 and the inner nut 120 is screwed onto the bolt 110 until the gasket is tightly pressed against the license plate fixing seat.

[0047] Alternatively, when the bolt 110 is fixed to the license plate fixing seat, the gasket 132 and the inner bolt 120 welded together are screwed onto the bolt 110 together until the gasket 132 is tightly pressed against the license plate fixing seat.

[0048] Next, the outer nut 142 is screwed onto the bolt 110 in reverse and screwed to a position where it is tightly pressed against the inner nut 120. The first buckle cover 144 is passed through the end of the bolt 110 and aligned with the first buckle ring 136, and the bent portion on the bent claw 141 and the inner buckle portion on the first buckle ring 136 engage with each other, so that the first buckle cover 144 and the first buckle ring 136 form a locking connection. The first buckle cover 144 is buckled at the end of the bolt 110, that is, the outside of the outer nut 142, thereby preventing the outer nut 142 from being screwed out of the bolt 110, thereby preventing the inner nut 120 from falling off the bolt 110.

[0049] When the outer nut 142 is loosened and moves on the bolt 110 to abut against the first buckle cover 144 , the second resistance increasing member 143 helps prevent the outer nut 142 from falling off the bolt 110 by increasing the resistance to further screwing out of the outer nut 142 .

[0050] like Figure 4 and Figure 5 As shown, in one embodiment, the outer resistance member 140 also includes a second buckle cover 146, and the second buckle cover 146 penetrates the surface of the bolt 110 to form a through hole, and a clamping spring 145 is installed on the inner wall of the through hole formed by the second buckle cover 146, and the end of the clamping spring 145 facing away from the through hole abuts against the outer nut 142 to prevent the outer nut 142 from being screwed out of the bolt 110.

[0051] The gasket 132 extends from its edge in the width direction to form a second buckle ring 138, and the second buckle ring 138 is threadedly connected to the end of the second buckle cover 146 away from the through hole.

[0052] Specifically, when installing the outer abutment 140, the second buckle cover 146 is sleeved on the bolt 110 and threadedly connected to the second buckle ring 138. During this process, the end of the clamping spring 145 away from the second buckle cover 146 abuts against the outer nut 142, and as the connection surface between the second buckle cover 146 and the second buckle ring 138 increases, the abutment spring 145 is further compressed to generate elastic force applied to the outer nut 142, thereby helping the outer nut 142 and the inner nut 120 to maintain a tight state, so as to prevent the inner nut 120 from falling off the bolt 110.

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. A license plate sealing device, characterized in that: include: bolt; An internal nut, threadedly mounted on the rear end of the bolt; An inner abutment piece is sleeved on the bolt and is located on a side of the inner nut away from the rear end of the bolt; The outer abutment has a threaded portion with a screw thread direction opposite to that of the screw thread of the inner nut, is installed at the rear end of the bolt, and abuts against the outer end of the inner nut.

2. The license plate fixing device according to claim 1, characterized in that: The inner abutment member includes a gasket and a first resistance-increasing member, wherein the first resistance-increasing member is located on the gasket, and the first resistance-increasing member abuts against the inner nut to increase the resistance of the inner nut from being screwed out of the bolt.

3. The license plate fixing device according to claim 2, characterized in that: The outer abutment member comprises an outer nut, and the outer nut and the inner nut are screwed onto the bolt in opposite directions.

4. The license plate fixing device according to claim 3, characterized in that: The outer resistance member also includes a first buckle cover, which penetrates the surface of the bolt to form a through hole, and the first buckle cover is divided into a bending claw at one end adjacent to its circumferential edge, and the bending claw has a bending portion protruding outward, and the outer end of the bending claw can swing along the radial direction of the first buckle cover.

5. The license plate fixing device according to claim 4, characterized in that: The inner wall of the first buckle cover forming the through hole is provided with a second resistance increasing member, and the second resistance increasing member is used to increase the friction between the abutting surface of the outer nut and the first buckle cover.

6. The license plate fixing device according to claim 4, characterized in that: The gasket extends from its edge in the width direction to form a first buckle ring, the inner diameter of the first buckle ring matches the outer diameter of the first buckle cover, and the inner wall of the first buckle ring has an inner buckle portion that matches the shape of the bent portion.

7. The license plate fixing device according to any one of claims 3 to 6, characterized in that: The outer resistance member also includes a second buckle cover, which penetrates through the surface of the bolt to form a penetration hole, and a clamping spring is installed on the inner wall of the penetration hole formed by the second buckle cover, and the end of the clamping spring facing away from the penetration hole abuts against the outer nut to prevent the outer nut from being screwed out of the bolt.

8. The license plate fixing device according to claim 7, characterized in that: The gasket extends from its edge in the width direction to form a second buckle ring, and the second buckle ring is threadedly connected to an end of the second buckle cover away from the penetration hole.

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