Locking structure

Abstract

The utility model relates to the technical field of vehicle steering, and discloses a locking structure, which comprises a pneumatic driving piece fixed on a steering shaft, a stop block fixedly connected with the output end of the pneumatic driving piece, and two stop plates fixedly connected on a tie rod, the two stop plates extend in the length direction of the transverse pull rod, a clamping groove is formed between the two stop plates, and the pneumatic driving piece is used for driving the stop blocks to move up and down in the clamping groove. The stop block is additionally arranged at the output end of the pneumatic driving piece, the stop block is matched with the clamping groove between the two stop plates, locking of the tie rod is achieved, the stop block and the clamping groove are in surface contact, the contact area is increased, meanwhile, abrasion resistance is greatly improved, and the replacement frequency of the stop block is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle steering, in particular to a locking structure. Background Art

[0002] The locking structure of the vehicle steering device is used to fix the tie rod to achieve steering locking. The common locking structure is mainly achieved by the cooperation of the cylinder on the locking cylinder and the locking bracket fixed on the tie rod. Specifically, a through hole is opened on the locking bracket, and the locking cylinder cylinder is inserted into the through hole to achieve locking of the tie rod, or the locking cylinder cylinder is moved away from the through hole to achieve unlocking. Since the tie rod is displaceable, the above locking structure has the problem that the cylinder of the locking cylinder is difficult to align with the through hole on the locking bracket. The small volume and small contact area of ​​the cylinder will cause wear of the locking cylinder cylinder and the locking bracket. In addition, the maintenance cost is high after the locking cylinder is worn.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0004] In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a locking structure, aiming to solve the problems of the prior locking structure being difficult to lock due to the difficulty in aligning the hole and the easy wear of the locking cylinder.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A locking structure includes a pneumatic drive component fixed on a steering shaft, a stop block fixedly connected to the output end of the pneumatic drive component, and two stop plates fixedly connected to a transverse tie rod; the two stop plates extend along the length direction of the transverse tie rod, and a slot is formed between the two stop plates, and the pneumatic drive component is used to drive the stop block to move up and down in the slot.

[0007] The locking structure described, wherein the pneumatic drive component is an air chamber; a guide panel is fixedly connected to the steering shaft, the guide panel is located above the two stop plates, and a mounting seat is fixedly connected to the lower surface of the guide panel, the air chamber is fixed on the mounting seat, and the push rod of the air chamber is arranged upward, and the stop block is fixedly connected to the push rod of the air chamber; an avoidance hole for avoiding the stop block is opened on the mounting seat.

[0008] The locking structure described herein is characterized in that a first nut and a second nut are provided on the push rod of the air chamber, and a first slot and a second slot are provided on the stop block, wherein the first slot and the second slot are arranged up and down and are interconnected; the push rod of the air chamber passes through the first slot and the second slot; the first nut is located in the first slot, and the lower surface of the first nut abuts against the lower slot wall of the first slot; the second nut is located in the second slot, and the upper surface of the second nut abuts against the upper slot wall of the second slot.

[0009] The locking structure described above, wherein a first limit block is fixedly connected to the lower surface of the stop block, the first limit block is extended along the length direction of the two stop plates, and the length of the first limit block is greater than the width of the avoidance hole; the upper surface of the first limit block is used to abut against the lower surface of the guide panel.

[0010] The locking structure, wherein an elastic layer is provided on the lower surface of the guide panel or the upper surface of the first limiting block.

[0011] The locking structure, wherein the lower surfaces of the two stop plates are fixedly connected with the same second limit block, the second limit block spans across the two sides of the slot, and the upper surface of the second limit block is used to abut against the lower surface of the stop block.

[0012] The locking structure, wherein the side wall of the second limit block is fixedly connected to the outer peripheral wall of the tie rod.

[0013] Beneficial effects:

[0014] The utility model provides a locking structure, which realizes the locking of the cross tie rod by adding a stop block on the output end of the pneumatic drive component so that the stop block cooperates with the clamping groove between the two stop plates, and the stop block and the clamping groove adopt a surface contact method, which increases the contact area and greatly improves the wear resistance, thereby reducing the frequency of replacement of the stop block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the locking structure provided by the utility model Figure 1 .

[0016] Figure 2 The structure diagram of the locking structure Figure 2 .

[0017] Figure 3 for Figure 1 sectional view of .

[0018] Figure 4 The schematic diagram shows the structure of the locking structure with the thickness of the pneumatic drive component hidden.

[0019] Explanation of main component symbols: 1-steering shaft, 2-guide panel, 21-avoidance hole, 3-mounting seat, 4-pneumatic drive member, 41-first nut, 42-second nut, 5-stop block, 51-first slot, 52-second slot, 6-transverse tie rod, 7-stop plate, 71-slot, 8-first limit block, 9-second limit block. DETAILED DESCRIPTION

[0020] The utility model provides a locking structure. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.

[0021] See also Figure 1-Figure 4 The utility model provides a locking structure, including a pneumatic driving member 4 fixed on a steering shaft 1, a stop block 5 fixedly connected to an output end of the pneumatic driving member 4, and two stop plates 7 fixedly connected to a transverse tie rod 6; the two stop plates 7 extend along the length direction of the transverse tie rod 6, and a slot 71 is formed between the two stop plates 7, and the pneumatic driving member 4 is used to drive the stop block 5 to move up and down in the slot 71.

[0022] In actual use, the two ends of the tie rod 6 are connected to the steering wheels. When the vehicle needs to turn, the output end of the pneumatic drive 4 extends upward, pushing the stop block 5 out of the slot 71, so that the lock of the two stop plates 7 is released, the tie rod 6 can move laterally, and the vehicle can turn; when the vehicle does not need to turn, the tie rod 6 returns the steering wheel to the right position through the friction of the ground, and the output end of the pneumatic drive 4 contracts downward, pulling the stop block 5 back into the slot 71, limiting the lateral movement of the tie rod 6, thereby locking the tie rod 6.

[0023] In the above structure, by adding a stop block 5 to the output end of the pneumatic drive 4, the stop block 5 is matched with the slot 71 between the two stop plates 7 to achieve the locking of the cross-tie rod 6. In addition, the stop block 5 and the slot 71 are in surface contact, which increases the contact area and greatly improves the wear resistance, thereby reducing the frequency of replacement of the stop block 5.

[0024] See also Figure 1In some embodiments, the pneumatic drive member 4 is an air chamber; a guide panel 2 is fixedly connected to the steering shaft 1, the guide panel 2 is located above the two stop plates 7, and a mounting seat 3 is fixedly connected to the lower surface of the guide panel 2, the air chamber is fixed on the mounting seat 3, and the push rod of the air chamber is arranged upward, and the stop block 5 is fixedly connected to the push rod of the air chamber; an avoidance hole 21 for avoiding the stop block 5 is opened on the mounting seat 3.

[0025] Specifically, the air chamber in this embodiment mainly includes the following structures: an upper shell and a lower shell arranged up and down, a clamp assembly for connecting the upper shell and the lower shell, an air inlet arranged at the bottom of the lower shell, a support plate and a diaphragm arranged in the inner cavity of the lower shell, a push rod for connecting the support plate and the diaphragm and extending vertically upward, and return springs located in the inner cavities of the upper shell and the lower shell. The push rod is pushed out by inflating the air inlet; the push rod is pulled back by exhausting the air inlet. It should be noted that the structural composition of the air chamber is a prior art and is a product that can be purchased on the market. In addition, the utility model replaces the common locking cylinder with a more common and cheaper air chamber, which is conducive to reducing the cost of the locking structure.

[0026] The guide panel 2 and the mounting seat 3 are arranged to provide a position for the installation of the air chamber, so that the push rod of the air chamber can be fixedly connected with the stop block 5 after passing through the mounting seat 3. The setting of the avoidance hole 21 provides a position avoidance for the up and down movement of the stop block 5, making the locking structure more compact and smaller in size.

[0027] See also Figure 1 and Figure 3 In some embodiments, the push rod of the air chamber is provided with a first nut 41 and a second nut 42, and the stop block 5 is provided with a first slot 51 and a second slot 52, the first slot 51 and the second slot 52 are arranged up and down and interpenetrate each other; the push rod of the air chamber passes through the first slot 51 and the second slot 52; the first nut 41 is located in the first slot 51, and the lower surface of the first nut 41 abuts against the lower slot wall of the first slot 51; the second nut 42 is located in the second slot 52, and the upper surface of the second nut 42 abuts against the upper slot wall of the second slot 52. Specifically, the push rod of the air chamber, the stop block 5 and the mounting seat 3 are firmly connected by the first nut 41, the first slot 51, the second nut 42 and the second slot 52. When the stop block 5 or the air chamber needs to be replaced, it can be disassembled by screwing the first nut 41 and the second nut 42.

[0028] See also Figure 2 and Figure 4In some embodiments, the lower surface of the stop block 5 is also fixedly connected with a first limit block 8, the first limit block 8 is extended along the length direction of the two stop plates 7, and the length of the first limit block 8 is greater than the width of the avoidance hole 21; the upper surface of the first limit block 8 is used to abut against the lower surface of the guide panel 2. When the push rod of the air chamber drives the stop block 5 to be pushed upward, the stop block 5 moves upward in the avoidance hole 21, so that the first limit block 8 fixedly connected to the lower surface of the stop block 5 moves upward synchronously, and because the length of the first limit block 8 is greater than the width of the avoidance hole 21, the first limit block 8 will limit the continued upward movement of the stop block 5, thereby cooperating with the air chamber to achieve the limit of the upward movement of the stop block 5.

[0029] In some embodiments, an elastic layer is provided on the lower surface of the guide panel 2 or the upper surface of the first stop block 8. The stop block 5 and the guide panel 2 are both made of metal material, and the elastic layer is provided to achieve a buffering and silencing effect when the stop block 5 and the guide panel 2 are in contact.

[0030] See also Figure 2 and Figure 4 In some embodiments, the lower surfaces of the two stopper plates 7 are fixedly connected with the same second limit block 9, the second limit block 9 spans across the two sides of the slot 71, and the upper surface of the second limit block 9 is used to abut against the lower surface of the stopper block 5. Similarly, when the push rod of the air chamber drives the stopper block 5 to pull back downward, the stopper block 5 gradually pulls back to the bottom of the slot 71, and the second limit block 9 can limit the stopper block 5 from continuing to move downward, thereby cooperating with the air chamber to limit the downward movement of the stopper block 5. In addition, the two stopper plates 7 are fixedly connected to the same second limit block 9, which can improve the connection rigidity between the two stopper plates 7.

[0031] See also Figure 2 and Figure 4 In some embodiments, the side wall of the second limit block 9 is fixedly connected to the outer peripheral wall of the tie rod 6. Since the contact area between the upper surface of the second limit block 9 and the lower surface of the stop plate 7 is not large, the second limit block 9 is further firmly fixed to the lower surfaces of the two stop plates 7 through the above arrangement.

[0032] In summary, the utility model adds a stop block 5 to the output end of the pneumatic drive 4, so that the stop block 5 cooperates with the slot 71 between the two stop plates 7 to achieve the locking of the cross-tie rod 6, and the stop block 5 and the slot 71 are in surface contact, which increases the contact area and greatly improves the wear resistance, thereby reducing the frequency of replacement of the stop block 5.

[0033] 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" 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.

[0034] In addition, the terms "first", "second", and "third" 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", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0035] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A locking structure, characterized in that: It includes a pneumatic drive component fixed on the steering shaft, a stop block fixedly connected to the output end of the pneumatic drive component, and two stop plates fixedly connected to the transverse tie rod; the two stop plates extend along the length direction of the transverse tie rod, and a slot is formed between the two stop plates, and the pneumatic drive component is used to drive the stop block to move up and down in the slot.

2. The locking structure according to claim 1, characterized in that: The pneumatic drive member is an air chamber; a guide panel is fixedly connected to the steering shaft, the guide panel is located above the two stop plates, and a mounting seat is fixedly connected to the lower surface of the guide panel, the air chamber is fixed on the mounting seat, and the push rod of the air chamber is arranged upward, and the stop block is fixedly connected to the push rod of the air chamber; The mounting seat is provided with an avoidance hole for avoiding the stop block.

3. The locking structure according to claim 2, characterized in that: A first nut and a second nut are provided on the push rod of the air chamber, and a first slot and a second slot are provided on the stop block, wherein the first slot and the second slot are arranged up and down and are interconnected; the push rod of the air chamber passes through the first slot and the second slot; the first nut is located in the first slot, and the lower surface of the first nut abuts against the lower slot wall of the first slot; the second nut is located in the second slot, and the upper surface of the second nut abuts against the upper slot wall of the second slot.

4. The locking structure according to claim 2, characterized in that: A first limit block is also fixedly connected to the lower surface of the stop block, and the first limit block is extended along the length direction of the two stop plates, and the length of the first limit block is greater than the width of the avoidance hole; the upper surface of the first limit block is used to abut against the lower surface of the guide panel.

5. The locking structure according to claim 4, characterized in that: An elastic layer is provided on the lower surface of the guide panel or the upper surface of the first limiting block.

6. The locking structure according to claim 4, characterized in that: The lower surfaces of the two stop plates are fixedly connected with the same second limit block, the second limit block spans across the two sides of the slot, and the upper surface of the second limit block is used to abut against the lower surface of the stop block.

7. The locking structure according to claim 6, characterized in that: The side wall of the second limit block is fixedly connected to the outer peripheral wall of the tie rod.

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