Fully automatic tightening device for vehicle fuel tank straps

Abstract

The present invention discloses a fully automatic re-tightening device for a fuel tank band of a vehicle, and relates to the technical field of fuel tank band structure, including an L-shaped bracket and an L-shaped band, wherein a sliding sleeve is installed on one side of the L-shaped bracket near both ends, the sliding sleeve is vertically arranged on the side corresponding to the L-shaped bracket, and straight rods are installed on both ends of the L-shaped band. In the present invention, a fuel tank body is placed on the L-shaped bracket, the L-shaped band is pressed on the fuel tank body and forms a constraint on the fuel tank body, the tension of the first tension spring pulls the straight rods at both ends and makes them slide along the sliding sleeve, so that the L-shaped band always presses the fuel tank body, and the reverse movement of the L-shaped band is limited under the action of a one-way limit assembly, and when a gap appears between the L-shaped band and the fuel tank body and becomes loose, the L-shaped band quickly comes close to the fuel tank body under the tension of the first tension spring, so that the L-shaped band is automatically re-tightened.

Description

Technical Field

[0001] The invention relates to the technical field of fuel tank band structures, and in particular to a fully automatic re-tightening device for a vehicle fuel tank band. Background Art

[0002] The fuel tank is an important component of the vehicle, used to store fuel. The stability of its installation and layout plays a vital role in the power performance and safety performance of the whole vehicle. At present, the fuel tank is mostly fixed by a bracket and a fuel tank fixing belt. The bracket plays a load-bearing role, and the fuel tank fixing belt plays a tightening role. After the fuel tank strap is installed, the screws are always loosened due to long-term bumps and accidental collisions, resulting in a gap between the strap and the fuel tank. If it is not tightened again in time, it is easy to cause the fuel tank to loosen and cause a safety accident.

[0003] In the prior art, the technical solution for re-tightening the fuel tank band is mainly to manually tighten the fastening bolts of the band regularly. However, in actual use, the tightness of the bolts of the fuel tank band is not only affected by the mileage, but also by the quality of the driving road. When the driver drives on a bumpy road for a long time, the fuel tank band will be more likely to loosen, so that the band may not be tightened in time, which poses a certain danger. Therefore, we disclose a fully automatic re-tightening device for a vehicle fuel tank band to meet people's needs. Summary of the invention

[0004] The purpose of the present application is to provide a fully automatic re-tightening device for a vehicle fuel tank strap, so as to solve the problem raised in the above background technology that when the driver drives on a bumpy road for a long time, the fuel tank strap will be more easily loosened, so that the strap may not be tightened in time, which may cause certain dangers.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a fully automatic re-tightening device for a vehicle fuel tank band, comprising an L-shaped bracket and an L-shaped band, wherein a sliding sleeve is installed on one side of the L-shaped bracket near both ends, and the sliding sleeve is vertically arranged on the side corresponding to the L-shaped bracket, and straight rods are installed on both ends of the L-shaped band, and the two straight rods are slidably installed in the corresponding sliding sleeves, and the L-shaped band and the L-shaped bracket form a quadrilateral structure, and a first tension spring is installed on one end of the two straight rods, and the first tension spring is a strong spring, and a portal frame is installed on one side of the L-shaped bracket corresponding to the position of the sliding sleeve, and one end of the first tension spring is connected to one side of the portal frame through an adjustment unit, and a one-way limit assembly is installed between one side of the L-shaped bracket and the L-shaped band.

[0006] Based on the above structure, when in use, the two L-shaped brackets are fixed side by side on the vehicle, and then the fuel tank body is placed on the L-shaped bracket, the L-shaped band is pressed on the fuel tank body to form a constraint on the fuel tank body, and the tension of the first tension spring pulls the straight rods at both ends and makes them slide along the sliding sleeve, so that the L-shaped band always presses the fuel tank body, and the reverse movement of the L-shaped band is limited under the action of the one-way limit component. When a gap appears between the L-shaped band and the fuel tank body and becomes loose, under the action of the tension of the first tension spring, the L-shaped band quickly approaches the fuel tank body, so that the L-shaped band is automatically tightened. After tightening, the one-way limit component limits the L-shaped band again to keep it in a tightened state.

[0007] Preferably, the one-way limit assembly includes a tooth block, a strip block is installed on one side of the L-shaped strap near the two end positions, a ratchet bar is installed on one side of the two strip blocks, a U-shaped fixing block is correspondingly installed on one side of the L-shaped bracket, a sliding hole is opened on one side of the U-shaped fixing block, a guide rod is slidably installed in the sliding hole, an elastic unit is installed on one end of the guide rod, and the other end is connected to one side of the tooth block, and the tooth block is plugged and matched with the ratchet bar.

[0008] Furthermore, through the setting of the ratchet bar, when the bar block moves downward with the L-shaped hoop, the tooth block moves along the inclined surface of the ratchet bar, and slides along the sliding hole through the guide rod to separate from the ratchet bar. After moving a certain distance, the tooth block engages with the ratchet bar to limit the reverse movement of the ratchet bar, thereby realizing one-way limiting.

[0009] Preferably, the elastic unit includes a second tension spring, a fixing plate is installed on one end of the guide rod away from the tooth block, the second tension spring is sleeved on the guide rod, one end of the second tension spring is installed on one side of the fixing plate, and the other end is installed on one side of the U-shaped fixing block.

[0010] Furthermore, through the provision of the second tension spring, the second tension spring pulls the guide rod to drive the tooth block to move toward one side of the ratchet bar, and causes the tooth block to engage with the ratchet bar.

[0011] Preferably, the inner walls on both sides of the U-shaped fixing block match the two sides of the strip block, and one side of the U-shaped fixing block matches one side of the L-shaped hoop.

[0012] Furthermore, the strip block is made of a rigid material, and the U-shaped fixing block limits the left and right movement of the strip block through two inner walls, thereby preventing the ratchet bar from separating from the tooth block, and one side of the L-shaped hoop is tightly attached to the outer wall of the fuel tank body, and one side of the U-shaped fixing block limits the separation of the L-shaped hoop from the fuel tank body, thereby playing a good limiting role.

[0013] Preferably, the adjustment unit comprises a threaded column, a threaded hole is formed on one side of the portal frame, the threaded column is threadedly installed in the threaded hole, and one end of the threaded column is connected to one end of the first tension spring.

[0014] Furthermore, through the setting of the threaded column, when the threaded column is rotated, the threaded column moves up and down along the threaded hole, so that the first tension spring can be tightened, so that the tension of the first tension spring can be adjusted to better pull the straight rod.

[0015] Preferably, a hexagonal hole is formed on one end of the threaded column away from the first tension spring, an annular groove is formed on one end of the threaded column, one end of the first tension spring is sleeved on the annular groove and is rotatably connected to the threaded column.

[0016] Furthermore, by providing the hexagonal hole, it is convenient to use a tool to rotate the threaded column. When the threaded column of the shift lever rotates, the first tension spring and the threaded column rotate relative to each other, which facilitates the rotation of the threaded column.

[0017] Preferably, a groove is provided at one end of the threaded column, and a scale mark is engraved on a groove wall on one side of the groove, and the scale mark corresponds to one side of the portal frame.

[0018] Furthermore, by setting the scale mark, it is easy to identify the moving distance of the threaded column, to adjust the threaded column, and to use it.

[0019] Preferably, waist-shaped holes are provided on both sides of one side of the L-shaped band close to the bending position, and fixing bolts are installed on the outer side wall of the fuel tank body.

[0020] Furthermore, after the fixing bolts penetrate the corresponding waist-shaped holes, nuts are used to fix the L-shaped band, so that the middle part of the L-shaped band is fixed to the fuel tank body, which facilitates the movement of the two ends of the L-shaped band.

[0021] Preferably, a cushion layer is installed on one side of the L-shaped hoop and one side of the L-shaped bracket.

[0022] Furthermore, by providing the cushion layer, the friction between the L-shaped strap and the fuel tank body can be reduced, thereby reducing damage to the fuel tank body.

[0023] Preferably, a mounting frame is installed on one side of the L-shaped bracket.

[0024] Furthermore, by providing the mounting frame, it is convenient to fix the L-shaped bracket on the vehicle.

[0025] In summary, the technical effects and advantages of the present invention are as follows:

[0026] 1. In the present invention, the fuel tank body is placed on the L-shaped bracket, the L-shaped hoop is pressed on the fuel tank body to form a constraint on the fuel tank body, the tension of the first tension spring pulls the straight rods at both ends and makes them slide along the sliding sleeve, so that the L-shaped hoop always presses the fuel tank body, and the reverse movement of the L-shaped hoop is limited under the action of the one-way limit assembly. When a gap appears between the L-shaped hoop and the fuel tank body and loosens, the L-shaped hoop quickly comes close to the fuel tank body under the tension of the first tension spring, so that the L-shaped hoop is automatically tightened.

[0027] 2. In the present invention, through the setting of the ratchet bar, when the strip block moves downward with the L-shaped hoop, the tooth block moves along the inclined surface of the ratchet bar, slides along the sliding hole through the guide rod, and is separated from the ratchet bar. After moving a certain distance, the tooth block engages with the ratchet bar to limit the reverse movement of the ratchet bar, thereby realizing one-way limiting. The U-shaped fixing block limits the left and right movement of the strip block through two inner side walls, thereby preventing the ratchet bar from being separated from the tooth block. One side of the L-shaped hoop is tightly attached to the outer side wall of the fuel tank body, and one side of the U-shaped fixing block limits the separation of the L-shaped hoop from the fuel tank body, thereby playing a good limiting role.

[0028] 3. In the present invention, through the setting of the threaded column, when the threaded column is rotated, the threaded column moves up and down along the threaded hole, so that the first tension spring can be tightened, so that the tension of the first tension spring can be adjusted to better pull the straight rod. Through the setting of the scale mark, it is convenient to identify the moving distance of the threaded column, facilitate the adjustment of the threaded column, and facilitate use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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 those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the local cross-section structure of the waist-shaped hole area in the present invention;

[0032] Figure 3 It is a schematic diagram of the partial cross-section structure of the straight rod area in the present invention;

[0033] Figure 4 It is a schematic diagram of the partial cross-section structure of the thread column area in the present invention;

[0034] Figure 5 It is a schematic diagram of the partial cross-section structure of the tooth block area in the present invention;

[0035] Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention in use state.

[0036] In the figure: 1. L-shaped bracket; 2. L-shaped hoop; 3. mounting frame; 4. straight rod; 5. first tension spring; 6. threaded column; 7. door-shaped frame; 8. U-shaped fixing block; 9. waist-shaped hole; 10. fuel tank body; 11. fixing bolt; 12. nut; 13. sliding sleeve; 14. strip block; 15. ratchet bar; 16. tooth block; 17. guide rod; 18. hexagonal hole; 19. scale mark; 20. second tension spring; 21. fixing plate; 22. cushion layer. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] refer to Figure 1-6 The fully automatic re-tightening device for the fuel tank band of a vehicle shown in the figure comprises an L-shaped bracket 1 and an L-shaped band 2. A sliding sleeve 13 is installed through the upper and lower surfaces of one side of the L-shaped bracket 1 near both ends, and the sliding sleeve 13 is vertically arranged with the corresponding side of the L-shaped bracket 1. Straight rods 4 are installed at both ends of the L-shaped band 2. The two straight rods 4 are slidably installed in the corresponding sliding sleeves 13, and the L-shaped band 2 and the L-shaped bracket 1 form a quadrilateral structure. A first tension spring 5 is installed at one end of the two straight rods 4. The first tension spring 5 is a strong spring. A portal frame 7 is installed at the position of the sliding sleeve 13 on one side of the L-shaped bracket 1. The other end of the first tension spring 5 is connected to one side of the portal frame 7. A one-way limit assembly is installed between one side of the L-shaped bracket 1 and the L-shaped band 2.

[0040] Based on the above structure, when in use, the two L-shaped brackets 1 are fixed side by side on the vehicle, and then the fuel tank body 10 is placed on the L-shaped bracket 1, and the L-shaped band 2 is pressed on the fuel tank body 10 to form a constraint on the fuel tank body 10. The tension of the first tension spring 5 pulls the straight rod 4 at both ends and makes it slide along the sliding sleeve 13, so that the L-shaped band 2 always presses the fuel tank body 10, and limits the reverse movement of the L-shaped band 2 under the action of the one-way limiting component. When a gap appears between the L-shaped band 2 and the fuel tank body 10 and becomes loose, under the action of the tension of the first tension spring 5, the L-shaped band 2 quickly approaches the fuel tank body 10, so that the L-shaped band 2 is automatically tightened. After tightening, the one-way limiting component limits the L-shaped band 2 again to keep it in a tightened state.

[0041] like Figure 3 and5 As shown, the one-way limit assembly includes a tooth block 16, and a strip block 14 is installed on one side of the L-shaped hoop 2 near the two ends, and a ratchet bar 15 is installed on one side of the two strip blocks 14; a U-shaped fixing block 8 is correspondingly installed on one side of the L-shaped bracket 1, and a sliding hole is opened through the bottom side of the U-shaped fixing block 8, and a guide rod 17 is slidably installed in the sliding hole, and an elastic limit unit is installed at one end of the guide rod 17, and the other end is connected to one side of the tooth block 16, and a side of the tooth block 16 with a pawl or ratchet is plugged and matched with the ratchet bar 15 to form a ratchet engagement structure. Through the setting of the ratchet bar 15, when the bar block 14 moves downward with the L-shaped hoop 2, the tooth block 16 moves along the inclined surface of the ratchet bar 15; since the ratchet bar 15 and the side of the tooth block 16 with the ratchet claw form a matching structure, the forward movement is not affected. During the reverse movement, the tooth block 16 engages with the ratchet bar 15 to limit the reverse movement of the ratchet bar 15, thereby realizing one-way limiting.

[0042] The elastic limiting unit includes a second tension spring 20. A fixing plate 21 is installed on one end of the guide rod 17 away from the tooth block 16. The second tension spring 20 is sleeved on the guide rod 17. One end of the second tension spring 20 is installed on one side of the fixing plate 21, and the other end is installed on one side of the U-shaped fixing block 8. Through the setting of the second tension spring 20, the second tension spring 20 pulls the guide rod 17 to drive the tooth block 16 to move to one side of the ratchet bar 15, and the tooth block 16 is engaged with the ratchet bar 15. In a normal state, the movable tooth block 16 is engaged with the ratchet bar 15; the fixing plate 21 is pulled to stretch the second tension spring 2, and the movable tooth block 16 and the ratchet bar 15 are disengaged. After release, the second tension spring 2 restores the elastic force, driving the fixing plate 21 and the guide rod 17 to return to motion, and then the movable tooth block 16 and the ratchet bar 15 are re-engaged.

[0043] Example 2

[0044] Figure 5 As shown, the inner walls of the two sides of the U-shaped fixing block 8 match the two sides of the strip block 14, that is, the strip block 14 is inserted into the U-shaped groove of the strip block 14; one side of the U-shaped fixing block 8 matches one side of the L-shaped band 2, the strip block 14 is made of rigid material, and the U-shaped fixing block 8 limits the left and right movement of the strip block 14 through the two inner side walls, thereby preventing the ratchet bar 15 from separating from the tooth block 16. One side of the L-shaped band 2 is tightly attached to the outer side wall of the fuel tank body 10, and one side of the U-shaped fixing block 8 limits the L-shaped band 2 from separating from the fuel tank body 10, which plays a good limiting role.

[0045] like Figure 3 and 4As shown, the other end of the first tension spring 5 is connected to one side of the portal frame 7 through an adjusting unit. The adjusting unit includes a threaded column 6. A threaded hole is opened on one side of the portal frame 7. The threaded column 6 is screwed into the threaded hole. One end of the threaded column 6 is connected to one end of the first tension spring 5. Through the setting of the threaded column 6, when the threaded column 6 is rotated, the threaded column 6 moves up and down along the threaded hole, so that the first tension spring 5 can be tightened, so that the tension of the first tension spring 5 can be adjusted, and the straight rod 4 can be better pulled.

[0046] A hexagonal hole 18 is provided on the end of the threaded column 6 away from the first tension spring 5, and an annular groove is provided on the other end of the threaded column 6. One end of the first tension spring 5 is sleeved on the annular groove and forms a rotational connection with the threaded column 6. The setting of the hexagonal hole 18 makes it convenient to use a tool to rotate the threaded column 6. When the gear lever threaded column 6 rotates, the first tension spring 5 and the threaded column 6 rotate relative to each other, which facilitates the rotation of the threaded column 6.

[0047] A groove is provided on the side wall of the threaded column 6, and a scale mark 19 is engraved on one side wall of the groove. The scale mark 19 is convenient for identifying the moving distance of the threaded column 6, adjusting the threaded column 6, and using it through the corresponding position of the gantry 7 and the corresponding mark of the scale mark 19.

[0048] like Figure 1 and 2 As shown, one side of the L-shaped band 2 is provided with waist-shaped holes 9 on both sides near the bending position, and fixing bolts 11 are installed on the outer wall of the tank body 10. After the fixing bolts 11 pass through the corresponding waist-shaped holes 9, the L-shaped band 2 is fixed with nuts 12, so that the middle part of the L-shaped band 2 is fixed to the tank body 10, which facilitates the movement of the two ends of the L-shaped band 2.

[0049] A cushion layer 22 is installed on one side of the L-shaped band 2 and one side of the L-shaped bracket 1. By setting the cushion layer 22, the friction between the L-shaped band 2 and the tank body 10 can be reduced, thereby reducing damage to the tank body 10.

[0050] A mounting bracket 3 is installed on one side of the L-shaped bracket 1. The installation of the mounting bracket 3 facilitates the L-shaped bracket 1 to be fixed on the vehicle.

[0051] Working principle of the present invention:

[0052] When in use, two L-shaped brackets 1 are fixed side by side on the vehicle, and then the fuel tank body 10 is placed on the L-shaped bracket 1, and the L-shaped band 2 is pressed on the fuel tank body 10 to form a constraint on the fuel tank body 10. The tension of the first tension spring 5 pulls the straight rod 4 at both ends and makes it slide along the sliding sleeve 13, so that the L-shaped band 2 always presses the fuel tank body 10, and the reverse movement of the L-shaped band 2 is limited under the action of the one-way limit assembly. When a gap appears between the L-shaped band 2 and the fuel tank body 10 and becomes loose, the first tension spring 5, the L-shaped hoop 2 quickly comes close to the tank body 10, so that the L-shaped hoop 2 is automatically tightened. After tightening, through the setting of the ratchet bar 15, when the strip block 14 moves downward with the L-shaped hoop 2, the tooth block 16 moves along the inclined surface of the ratchet bar 15, and slides along the sliding hole through the guide rod 17 to separate from the ratchet bar 15. After moving a certain distance, the tooth block 16 engages with the ratchet bar 15 to limit the reverse movement of the ratchet bar 15, thereby realizing the unidirectional limitation of the L-shaped hoop 2 and keeping it in a tightened state.

[0053] The two inner walls are used to limit the left and right movement of the strip block 14, thereby preventing the ratchet bar 15 from separating from the tooth block 16. One side of the L-shaped band 2 is tightly attached to the outer wall of the fuel tank body 10, and one side of the U-shaped fixing block 8 limits the separation of the L-shaped band 2 from the fuel tank body 10, which plays a good limiting role. Through the setting of the threaded column 6, when the threaded column 6 is rotated, the threaded column 6 moves up and down along the threaded hole, so that the first tension spring 5 can be tightened, so that the tension of the first tension spring 5 can be adjusted, and the straight rod 4 can be better pulled. Through the setting of the hexagonal hole 18, it is convenient to use tools to rotate the threaded column 6. When the gear lever threaded column 6 rotates, the first tension spring 5 and the threaded column 6 rotate relative to each other, which is convenient for the rotation of the threaded column 6. Through the setting of the scale mark 19, it is convenient to identify the moving distance of the threaded column 6, facilitate the adjustment of the threaded column 6, and facilitate use.

[0054] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic re-tightening device for a fuel tank band of a vehicle, comprising an L-shaped bracket (1) and an L-shaped band (2), characterized in that: A sliding sleeve (13) is installed on one side of the L-shaped bracket (1) near both ends, and the sliding sleeve (13) is vertically arranged on the side corresponding to the L-shaped bracket (1). Straight rods (4) are installed on both ends of the L-shaped band (2). The two straight rods (4) are slidably installed in the corresponding sliding sleeves (13), and the L-shaped band (2) and the L-shaped bracket (1) form a quadrilateral structure. One end of the two straight rods (4) is installed with a first tension spring (5). A door frame (7) is installed on one side of the L-shaped bracket (1) corresponding to the position of the sliding sleeve (13); one end of the first tension spring (5) is connected to one side of the door frame (7) through an adjustment unit; a one-way limit assembly is installed between one side of the L-shaped bracket (1) and the L-shaped hoop (2); the one-way limit assembly includes a tooth block (16); a strip block (14) is installed on one side of the L-shaped hoop (2) near both ends; one side of the two strip blocks (14) is A ratchet bar (15) is installed on each side of the L-shaped bracket (1), a U-shaped fixing block (8) is correspondingly installed on one side of the L-shaped bracket (1), a sliding hole is opened on one side of the U-shaped fixing block (8), a guide rod (17) is slidably installed in the sliding hole, an elastic unit is installed on one end of the guide rod (17), and the other end is connected to one side of the tooth block (16), and the tooth block (16) is plugged and matched with the ratchet bar (15); the elastic unit includes a second tension spring (20), and the guide rod ( A fixing plate (21) is installed on one end of the guide rod (17) away from the tooth block (16), and the second tension spring (20) is sleeved on the guide rod (17). One end of the second tension spring (20) is installed on one side of the fixing plate (21), and the other end is installed on one side of the U-shaped fixing block (8); the inner walls on both sides of the U-shaped fixing block (8) match the two sides of the strip block (14), and one side of the U-shaped fixing block (8) matches one side of the L-shaped hoop (2).

2. The fully automatic re-tightening device for the vehicle fuel tank strap according to claim 1, characterized in that: The adjustment unit comprises a threaded column (6), a threaded hole is provided on one side of the portal frame (7), the threaded column (6) is screwed into the threaded hole, and one end of the threaded column (6) is connected to one end of the first tension spring (5).

3. The fully automatic re-tightening device for the vehicle fuel tank strap according to claim 2, characterized in that: A hexagonal hole (18) is provided on one end of the threaded column (6) away from the first tension spring (5), and an annular groove is provided on one end of the threaded column (6). One end of the first tension spring (5) is sleeved on the annular groove and forms a rotational connection with the threaded column (6).

4. The fully automatic re-tightening device for the vehicle fuel tank strap according to claim 2, characterized in that: A groove is formed at one end of the threaded column (6), and a scale mark (19) is engraved on a groove wall on one side of the groove, and the scale mark (19) corresponds to one side of the portal frame (7).

5. The fully automatic re-tightening device for a vehicle fuel tank strap according to claim 1, characterized in that: One side of the L-shaped hoop (2) is provided with waist-shaped holes (9) on both sides close to the bending position.

6. The fully automatic re-tightening device for a vehicle fuel tank strap according to claim 1, characterized in that: One side of the L-shaped hoop (2) and one side of the L-shaped bracket (1) are both installed with a cushion layer (22).

7. The fully automatic re-tightening device for a vehicle fuel tank strap according to claim 1, characterized in that: A mounting frame (3) is mounted on one side of the L-shaped bracket (1).

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