Limiting stopper

Abstract

The utility model provides a limit stopper which comprises a cylindrical main body and an installation hole located in the middle of the lower end, mousing hooks distributed at intervals in the circumferential direction are arranged in the installation hole, and it is ensured that the limit stopper is stably installed on a piston and is prevented from loosening. The limiting backstop is further provided with a positioning ring, the inner diameter is smaller than that of the mounting hole, the positioning ring and the mousing hook are integrally formed, and accurate positioning is ensured. A gap is formed between the mousing hook and the inner circumferential surface of the mounting hole, so that mounting and thermal expansion compensation are facilitated. And a reinforcing rib is arranged between every two adjacent groups of mousing hooks, so that the structural strength is improved. The distance from the inner side face of the reinforcing rib to the center line of the mounting hole is longer than that from the inner side face of the mousing-hook to the center line of the mounting hole, and mounting is prevented from being affected. And the inclined arc-shaped surface is arranged below the mousing hook and the reinforcing rib, so that the installation is convenient. A reinforcing plate is arranged on the periphery of the cylindrical body, the upper end is connected with a flange face, an inclined face is arranged on the side edge away from the cylindrical body, and the mounting hole penetrates in the axis direction of the cylindrical body to reduce weight.

Description

Technical Field

[0001] This utility model specifically relates to a limiting stop. Background Technology

[0002] Air springs are a key component of automotive air suspension. Compared to conventional suspensions, they extend vehicle life, improve comfort, reduce wheel dynamic loads and road surface damage, lower maintenance costs, and allow for adjustment of the vehicle's height for specialized vehicles. An air spring mainly consists of an airbag, a top cover assembly connected to the airbag, and a piston connected to the bottom of the airbag. The piston, through its sealing structure, ensures that the gas inside the air spring does not leak, maintaining stable internal air pressure.

[0003] For example, Chinese invention patent application document with publication number "CN102574437A" discloses a set of air spring bumpers, which are mainly composed of pistons and airbags. A base plate (corresponding to number 5) is fixed above the piston between the piston and the airbag. This base plate can also be called a "limiting stop". It is installed above the piston of the air spring. When the airbag is compressed, the limiting stop can replace the piston and contact the cover plate assembly above the airbag, protecting the piston, airbag and cover plate assembly.

[0004] This limit stop has the following technical defects:

[0005] The limit stop is connected to a screw via a threaded connection hole at the bottom, allowing it to be installed above the piston. During air spring operation, the piston and air chamber move frequently, generating vibrations that can easily cause the screw to loosen. Once loose, the position of the limit stop will change, making it unable to accurately limit movement and affecting the normal operation of the air spring. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing a limiting stop. By setting an anti-disengagement hook in the mounting hole, the limiting stop is stably installed on the piston and will not loosen.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a limiting stop, comprising a cylindrical body, wherein the lower end of the cylindrical body is provided with a mounting hole, characterized in that: the mounting hole is provided with a plurality of anti-disengagement hooks arranged sequentially and at intervals along the circumference of the mounting hole.

[0008] By adopting the above technical solution, by setting several sets of anti-disengagement hooks arranged sequentially and at intervals along the circumference of the mounting hole, the limit stop can be stably installed on the piston without loosening, ensuring that the limit stop can accurately limit the position and guaranteeing the normal operation of the air spring.

[0009] The aforementioned limiting stop can be further configured as follows: a positioning ring is connected to the lower end of the mounting hole, the inner diameter of the positioning ring is smaller than the inner diameter of the mounting hole, the anti-disengagement hook is set on the inner side of the positioning ring and the two are integrally formed, and several sets of anti-disengagement hooks are arranged evenly at intervals along the circumference of the positioning ring.

[0010] By adopting the above technical solution, a positioning ring is incorporated to facilitate the fabrication of the anti-disengagement hook, while simultaneously ensuring that the limit stop is accurately positioned above the piston during installation. The inner diameter of the positioning ring is smaller than the inner diameter of the mounting hole. When the limit stop is connected to the connecting piece above the piston, the positioning ring securely engages the anti-disengagement hook with the connecting piece.

[0011] The aforementioned limiting stop can be further configured such that there is a gap between the anti-disengagement hook and the inner circumferential surface of the mounting hole.

[0012] Using the above technical solution, when the limit stop is installed above the piston, pressing down on the limit stop causes the anti-disengagement hook to be slightly deformed towards the inner circumference of the mounting hole due to the gap between the anti-disengagement hook and the mounting hole. Once installed in place, the anti-disengagement hook automatically resets and firmly engages with the outer circumference of the connector. Simultaneously, during operation, the plastic limit stop will thermally expand or contract due to temperature changes, meaning the anti-disengagement hook will also expand or contract. By setting a gap, the situation where thermal expansion prevents the anti-disengagement hook from failing to connect with the connector above the piston is prevented.

[0013] The aforementioned limiting stop can be further configured as follows: a set of reinforcing ribs is provided between each pair of adjacent anti-disengagement hooks, the side of the reinforcing ribs is connected to the inner circumferential surface of the mounting hole, and the lower end of the reinforcing ribs is integrally formed with the positioning ring.

[0014] The above technical solution improves the structural strength of the limit stop.

[0015] The aforementioned limiting stop can be further configured such that the distance from the inner side of the reinforcing rib to the center line of the mounting hole is longer than the distance from the inner side of the anti-disengagement hook to the center line of the mounting hole.

[0016] By adopting the above technical solution, the excessive size of the reinforcing ribs can be avoided from affecting the installation of the anti-disengagement hook and the connecting parts above the piston.

[0017] The aforementioned limiting stop can be further configured such that an arc-shaped surface is inclinedly provided below the anti-disengagement hook and below the reinforcing rib.

[0018] With the above technical solution, when installing the limit stop, the inclined arc surface allows the limit stop to be installed more easily above the piston without jamming.

[0019] The aforementioned limiting stop can be further configured as follows: the outer periphery of the cylindrical body is provided with several sets of evenly spaced reinforcing plates, each set of reinforcing plates extending outward along the radial direction of the cylindrical body.

[0020] The above technical solution improves the structural strength of the limit stop.

[0021] The aforementioned limiting stop can be further configured such that: the upper end of the cylindrical body is connected to a flange face, and the upper end of the reinforcing plate is connected to the flange face.

[0022] By adopting the above technical solution, the structural strength of the limit stop can be further improved.

[0023] The aforementioned limiting stop can be further configured such that the reinforcing plate has an inclined surface on the side away from the cylindrical body.

[0024] By adopting the above technical solution, the weight of the limit stop is reduced.

[0025] The aforementioned limiting stop can be further configured such that the mounting hole penetrates the cylindrical body along the axial direction of the cylindrical body.

[0026] By adopting the above technical solution, the weight of the limit stop can be further reduced.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 ;

[0030] Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0031] Label annotations: 1. Columnar body, 2. Mounting hole, 3. Anti-disengagement hook, 4. Positioning ring, 5. Reinforcing rib, 6. Arc-shaped surface, 7. Reinforcing plate, 8. Flange surface, 9. Inclined surface. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figures 1 to 3 The limit stop shown includes a cylindrical body 1. A mounting hole 2 is located at the lower center of the cylindrical body 1. Several sets of anti-disengagement hooks 3 are arranged at intervals along the circumference of the mounting hole 2 within the mounting hole 2. By providing several sets of anti-disengagement hooks 3 arranged at intervals along the circumference of the mounting hole 2, the limit stop can be stably installed on the piston without loosening, ensuring accurate positioning and guaranteeing the normal operation of the air spring.

[0034] A positioning ring 4 is connected to the lower end of the mounting hole 2. The inner diameter of the positioning ring 4 is smaller than that of the mounting hole 2. Anti-disengagement hooks 3 are integrally formed on the inner side of the positioning ring 4. Several sets of anti-disengagement hooks 3 are evenly spaced along the circumference of the positioning ring 4. The positioning ring 4 facilitates the machining of the anti-disengagement hooks 3 and ensures that the limit stop is accurately positioned above the piston during installation. Because the inner diameter of the positioning ring 4 is smaller than that of the mounting hole 2, when the limit stop is connected to the connecting piece above the piston, the positioning ring 4 securely engages the anti-disengagement hooks 3 with the connecting piece.

[0035] There is a gap between the anti-disengagement hook 3 and the inner circumferential surface of the mounting hole 2. When the limit stop is installed above the piston, pressing down on the limit stop causes the anti-disengagement hook 3 to be slightly deformed towards the inner circumferential surface of the mounting hole 2 due to the gap between the anti-disengagement hook 3 and the inner circumferential surface of the mounting hole 2. After installation, the anti-disengagement hook 3 automatically resets and firmly engages with the outer circumference of the connector. Simultaneously, during operation, the plastic limit stop will thermally expand or contract due to temperature changes, meaning the anti-disengagement hook 3 will also expand or contract. The gap is designed to prevent the anti-disengagement hook 3 from failing to connect with the connector above the piston due to thermal expansion.

[0036] A reinforcing rib 5 is provided between each pair of adjacent anti-disengagement hooks 3. The side of the reinforcing rib 5 is connected to the inner circumferential surface of the mounting hole 2, and the lower end of the reinforcing rib 5 is integrally formed with the positioning ring 4. This improves the structural strength of the limit stop.

[0037] The distance from the inner side of the reinforcing rib 5 to the center line of the mounting hole 2 is longer than the distance from the inner side of the anti-disengagement hook 3 to the center line of the mounting hole 2. This is to prevent the reinforcing rib 5 from being too large and affecting the installation of the anti-disengagement hook 3 and the connecting piece above the piston.

[0038] Below the anti-disengagement hook 3 and below the reinforcing rib 5, there are inclined arc-shaped surfaces 6. When the limit stop is installed, the inclined arc-shaped surfaces 6 make it easier to install the limit stop above the piston without causing jamming.

[0039] The outer periphery of the cylindrical body 1 is provided with several sets of evenly spaced reinforcing plates 7, each set of reinforcing plates 7 extending outward along the radial direction of the cylindrical body 1. This improves the structural strength of the limiting stop.

[0040] The upper end of the cylindrical body 1 is connected to a flange face 8, and the upper end of the reinforcing plate 7 is connected to the flange face 8. This further improves the structural strength of the limiting stop.

[0041] The reinforcing plate 7 has an inclined surface 9 on the side away from the columnar body 1. This reduces the weight of the limiting stop.

[0042] Mounting hole 2 penetrates the cylindrical body 1 along the axial direction of the cylindrical body 1, further reducing the weight of the limiting stop.

Claims

1. Limit stop comprising a cylindrical body, a central portion of the lower end of which is provided with a mounting hole, characterised in that: The mounting hole is provided with a plurality of groups of anti-unhooking hooks which are arranged in sequence and at intervals in the circumferential direction of the mounting hole.

2. Limit stop according to claim 1, characterized in that: The lower end of the mounting hole is connected with a positioning ring, the inner diameter of the positioning ring is smaller than the inner diameter of the mounting hole, the anti-unhooking hooks are arranged on the inner side of the positioning ring and are integrally formed with the positioning ring, and the plurality of groups of anti-unhooking hooks are arranged in sequence and at intervals in the circumferential direction of the positioning ring.

3. Limit stop according to claim 2, characterized in that: A gap exists between the anti-unhooking hooks and the inner circumferential surface of the mounting hole.

4. Limit stop according to claim 2 or 3, characterized in that: A reinforcing rib is arranged between every two adjacent groups of anti-unhooking hooks, the side edge of the reinforcing rib is connected with the inner circumferential surface of the mounting hole, and the lower end of the reinforcing rib is integrally formed with the positioning ring.

5. Limit stop according to claim 4, characterized in that: The distance from the inner side surface of the reinforcing rib to the center line of the mounting hole is longer than the distance from the inner side surface of the anti-unhooking hook to the center line of the mounting hole.

6. The limit stop of claim 4, wherein: An arc-shaped surface is arranged on the lower side of the anti-unhooking hook and on the lower side of the reinforcing rib.

7. Limit stop according to any one of claims 1 to 3, characterized in that: The outer periphery of the cylindrical body is provided with a plurality of groups of reinforcing plates which are arranged in sequence and at intervals, and each group of reinforcing plates extends outward along the radial direction of the cylindrical body.

8. Limit stop according to claim 7, characterized in that: The upper end of the cylindrical body is connected with a flange surface, and the upper end of the reinforcing plate is connected with the flange surface.

9. The limit stop of claim 7, wherein: An inclined surface is arranged on the side edge of the reinforcing plate which is away from the cylindrical body.

10. Limit stop according to any one of claims 1 to 3, characterized in that: The mounting hole penetrates the cylindrical body in the axial direction of the cylindrical body.

Images