Automobile caliper guide pin

Abstract

The utility model belongs to the technical field of automobile accessories, and particularly relates to an automobile caliper guide pin which comprises a pin head, the bottom of the pin head is fixedly connected with a reducing part, the outside of the reducing part is fixedly connected with a limiting ring, the bottom of the reducing part is fixedly connected with a pin rod, and the outside of the reducing part is sleeved with a rubber sleeve. The lower clamping ring is clamped into the pin hole of the wheel cylinder support, then the pin head drives the pin rod to sequentially penetrate through the upper clamping ring, the rubber sleeve and the lower clamping ring, a user opens the upper clamping ring through fingers and continues to penetrate through the limiting ring to be arranged outside the diameter shrinkage part in a sleeving mode, and after the fingers are loosened, the upper clamping ring is influenced by the elasticity of the upper clamping ring. The pin rod can automatically rebound and be tightly attached to the outer surface of the reducing part, the limiting ring can limit the rubber sleeve, the upper clamping ring, the rubber sleeve and the lower clamping ring are used in cooperation, the rubber sleeve can be prevented from falling off in the movement process, meanwhile, the connection sealing performance between the pin rod and the wheel cylinder support can be guaranteed, the production cost is low, the installation efficiency is high, and the use effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile accessories, in particular to a caliper guide pin for automobile. BACKGROUND

[0002] The caliper guide pin for automobile disc brake is a key component, which is used for installing and fixing the guide system of the caliper for automobile disc brake. It is usually made of metal material and has certain strength and wear resistance. The main function of the caliper guide pin for automobile disc brake is to ensure the accurate guidance and stable movement of the brake caliper during braking. It plays the role of connection and fixation through the connection with the brake caliper and the suspension system, and the guide pin directly affects the movement flexibility of the brake caliper and the sensitivity of braking, so it is an important safety part.

[0003] The prior art has the following defects or problems: the prior art with publication number CN212717724U discloses a guide pin for automobile brake caliper, which comprises a body in the form of a straight rod, the body has a head portion protruding radially outward, the head portion and the body further have a reduced diameter section connected to the bottom surface of the head portion, the outer diameter of the reduced diameter section is smaller than the outer diameter of the head portion and larger than the outer diameter of the body, the top surface of the head portion has a threaded hole coaxially arranged thereon, and the body has a through hole axially penetrating the threaded hole.

[0004] The above-mentioned device has the advantages of light weight, good installation effect and good lubricity during use.

[0005] The above-mentioned content does not have a quick detachable rubber sleeve, and the inside of the pin hole cannot be quickly injected with lubricating grease without disassembling the pin rod, which is not convenient to use, therefore, it is necessary to propose a caliper guide pin for automobile.

[0006] It should be noted that the above-mentioned content belongs to the technical cognition range of the inventor and does not necessarily constitute the prior art. CONTENT OF THE UTILITY MODEL

[0007] In view of the deficiencies of the prior art, the utility model provides a caliper guide pin for automobile, which solves the existing problems.

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a caliper guide pin for automobile, comprising a pin head, a reduced diameter portion is fixedly connected to the bottom of the pin head, a limiting ring is fixedly connected to the outside of the reduced diameter portion, a pin rod is fixedly connected to the bottom of the reduced diameter portion, a rubber sleeve is sleeved on the outside of the reduced diameter portion, an upper clamping ring is fixedly connected to one end of the rubber sleeve, and a lower clamping ring is fixedly connected to the other end of the rubber sleeve.

[0009] As a preferred technical scheme of the utility model, an oil channel is formed in the inside of the pin rod, and an oil injection port is formed in the inside of the pin rod and communicates with the oil channel.

[0010] As a preferred technical scheme of the utility model, a plurality of side oil outlet holes are arranged in the inner ring of the pin rod, and each side oil outlet hole is communicated with the oil channel.

[0011] As a preferred technical scheme of the utility model, a bottom oil outlet hole is arranged in the pin rod, and the bottom oil outlet hole is communicated with the oil channel.

[0012] As a preferred technical scheme of the utility model, a sealing plug is arranged in the oil inlet, the sealing plug is made of rubber, and a plurality of protruding portions are arranged on the outer portion of the sealing plug.

[0013] As a preferred technical scheme of the utility model, a limiting portion is arranged on the top of the pin head, and a hexagonal screw head is fixedly connected to the top of the limiting portion.

[0014] As a preferred technical scheme of the utility model, a threaded portion is fixedly connected to the bottom of the limiting portion, and a threaded hole matched with the threaded portion is arranged in the pin head.

[0015] Compared with the prior art, the utility model provides a kind of automobile caliper guide pin, with the following beneficial effects:

[0016] I, the automobile caliper guide pin, by setting up the reducing diameter portion, limiting ring, rubber sleeve, upper collar and lower collar, by the lower collar is clamped into the pin hole inside of branch pump support, again by pin head drives pin rod in sequence through upper collar, rubber sleeve and lower collar, user is by finger and continues to pass through the upper collar that is pried open and is set in the outside of reducing diameter portion through limiting ring, after loosening finger, upper collar is affected by self elastic force, automatically rebound and stick to the outer surface of reducing diameter portion, limiting ring can limit rubber sleeve, prevent rubber sleeve from falling off when moving, upper collar, rubber sleeve and lower collar are used in cooperation, can guarantee the sealing between pin rod and branch pump support;

[0017] II, the automobile caliper guide pin, by setting up oil channel, oil inlet, side oil outlet and bottom oil outlet, by the upper collar is taken off from the outside of reducing diameter portion, and is extruded downwards rubber sleeve, so that rubber sleeve is stacked, until the sealing plug is taken down, and then the grease is injected into oil channel from oil inlet, and then the grease is flowed out from bottom oil outlet and a plurality of side oil outlet holes in oil channel, so as to carry out all-round lubrication to pin hole, after the injection of grease is completed, the sealing plug is inserted into the oil inlet, to prevent backflow, finally, the upper collar is set on the outside of reducing diameter portion, to complete the rapid injection of grease, which is quick and easy to operate, and is convenient to use, avoids disassembly, can be quickly maintained, and has high practicality. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is overall structure schematic view of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure of the rubber sleeve of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the pin of this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure of the pin rod of this utility model.

[0022] In the diagram: 1. Pin head; 2. Reduced diameter section; 3. Limiting ring; 4. Pin rod; 5. Rubber sleeve; 6. Upper retaining ring; 7. Lower retaining ring; 8. Oil passage; 9. Oil inlet; 10. Side oil outlet; 11. Bottom oil outlet; 12. Sealing plug; 13. Limiting section; 14. Threaded section; 15. Hexagonal screw head; 16. Threaded hole. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] 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.

[0025] Example 1

[0026] like Figures 1-4 As shown, this utility model provides a technical solution: an automotive caliper guide pin, including a pin head 1, a reduced diameter portion 2 fixedly connected to the bottom of the pin head 1, a limit ring 3 fixedly connected to the outside of the reduced diameter portion 2, a pin rod 4 fixedly connected to the bottom of the reduced diameter portion 2, a rubber sleeve 5 sleeved on the outside of the reduced diameter portion 2, an upper retaining ring 6 fixedly connected to one end of the rubber sleeve 5, and a lower retaining ring 7 fixedly connected to the other end of the rubber sleeve 5.

[0027] In this embodiment, the lower retaining ring 7 is inserted into the pin hole of the pump bracket, and then the pin head 1 drives the pin rod 4 to pass through the upper retaining ring 6, the rubber sleeve 5 and the lower retaining ring 7 in sequence. The user opens the upper retaining ring 6 with his finger and continues to pass through the limiting ring 3 to fit the outside of the reduced diameter part 2. After releasing his finger, the upper retaining ring 6 automatically rebounds and sticks to the outer surface of the reduced diameter part 2 due to its own elasticity. The limiting ring 3 can limit the rubber sleeve 5 to prevent the rubber sleeve 5 from falling off during movement. The upper retaining ring 6, the rubber sleeve 5 and the lower retaining ring 7 work together to ensure the sealing between the pin rod 4 and the pump bracket.

[0028] Embodiment Two

[0029] As Figures 1-4 shown, the inside of the pin rod 4 is provided with an oil channel 8, the inside of the pin rod 4 is provided with an oil injection port 9, and the oil injection port 9 is in communication with the oil channel 8, a plurality of side oil outlet holes 10 are annularly provided in the inside of the pin rod 4, each side oil outlet hole 10 is in communication with the oil channel 8, a bottom oil outlet hole 11 is provided in the inside of the pin rod 4, the bottom oil outlet hole 11 is in communication with the oil channel 8, a sealing plug 12 is mounted in the inside of the oil injection port 9, the sealing plug 12 is made of rubber material, a plurality of protruding portions are provided on the outside of the sealing plug 12, a limiting portion 13 is provided on the top of the pin head 1, a hexagonal screw head 15 is fixedly connected to the top of the limiting portion 13, a threaded portion 14 is fixedly connected to the bottom of the limiting portion 13, a threaded hole 16 used in cooperation with the threaded portion 14 is provided in the inside of the pin head 1.

[0030] In this embodiment, the threaded portion 14 is driven by the hexagonal screw head 15 to pass through the pump support and the threaded portion 14 in the inside of the pin head 1 to be connected, and the pin rod 4 and the pump support can be fixed by rotating the limiting portion 13 to contact the upper surface of the pin head 1. When it is necessary to re-inject lubricating grease into the pin hole, the upper ring 6 is taken off from the outside of the reduced diameter portion 2, and the rubber sleeve 5 is squeezed downwardly so as to be stacked until the sealing plug 12 is leaked, the sealing plug 12 is taken off, the lubricating grease is injected into the oil channel 8 from the oil injection port 9, and then flows out from the bottom oil outlet hole 11 and the plurality of side oil outlet holes 10 in the oil channel 8, so as to lubricate the inside of the pin hole in all directions. After the lubricating grease is injected, the sealing plug 12 is inserted into the oil injection port 9 to prevent backflow, and finally the upper ring 6 is sleeved on the outside of the reduced diameter portion 2, which is quick and convenient to operate, easy to use, avoids disassembly, can be quickly maintained, and has high practicality.

[0031] The working principle of the embodiment is as follows: in use, the lower ring 7 is clamped into the pin hole of the sub-pump support, the pin rod 4 is sequentially penetrated through the upper ring 6, the rubber sleeve 5 and the lower ring 7 by the pin head 1, the user spreads the upper ring 6 by fingers and continues to penetrate the limiting ring 3 to be sleeved outside the reduced diameter part 2, after the fingers are loosened, the upper ring 6 is automatically rebounded and tightly attached to the outer surface of the reduced diameter part 2 under the influence of the elastic force of the upper ring 6, the limiting ring 3 can limit the rubber sleeve 5 to prevent the rubber sleeve 5 from falling off during movement, the upper ring 6, the rubber sleeve 5 and the lower ring 7 are used in cooperation to ensure the sealing between the pin rod 4 and the sub-pump support, the threaded part 14 is connected with the threaded part 14 inside the pin head 1 through the sub-pump support by the hexagonal head 15, the pin rod 4 and the sub-pump support are fixed by rotating the limiting part 13 to contact the upper surface of the pin head 1, due to the long-time working behavior of the pin rod 4 in the sub-pump support, the grease inside the pin hole in the sub-pump support may form a solid state, which affects the return movement of the pin rod 4 and may cause the brake pad and the brake disc to generate friction and high temperature, thereby affecting the operation of the entire brake sub-pump system, at this time, the upper ring 6 is removed from the outside of the reduced diameter part 2, the rubber sleeve 5 is extruded downward to be stacked until the sealing plug 12 is leaked, the sealing plug 12 is removed, the grease is injected into the oil channel 8 from the oil injection port 9, and then the grease flows out from the bottom oil outlet hole 11 and the plurality of side oil outlet holes 10 in the oil channel 8, so as to lubricate the inside of the pin hole in all directions, after the grease is injected, the sealing plug 12 is inserted into the oil injection port 9 to prevent backflow, finally, the upper ring 6 is sleeved outside the reduced diameter part 2, which is quick and convenient to operate, easy to use, avoids disassembly, can be quickly maintained and has high practicality.

[0032] The above is only a preferred embodiment of the present application, and does not limit the present application in other forms, any skilled person in the art can change or modify the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A caliper guide pin for a vehicle, characterized by: Including the pin head (1), the bottom of the pin head (1) is fixedly connected with the reduced section (2), the outside of the reduced section (2) is fixedly connected with the limiting ring (3), the bottom of the reduced section (2) is fixedly connected with the pin rod (4), the outside of the reduced section (2) is sleeved with the rubber sleeve (5), one end of the rubber sleeve (5) is fixedly connected with the upper clamping ring (6), the other end of the rubber sleeve (5) is fixedly connected with the lower clamping ring (7).

2. The automotive caliper guide pin of claim 1, wherein: The inside of the pin rod (4) is provided with an oil channel (8), the inside of the pin rod (4) is provided with an oil injection port (9), and the oil injection port (9) is communicated with the oil channel (8).

3. The automotive caliper guide pin of claim 1, wherein: A plurality of side oil outlet holes (10) are arranged in the inside of the pin rod (4) in a ring shape, and each side oil outlet hole (10) is communicated with the oil channel (8).

4. The automotive caliper guide pin of claim 1, wherein: The inside of the pin rod (4) is provided with a bottom oil outlet hole (11), and the bottom oil outlet hole (11) is communicated with the oil channel (8).

5. The automotive caliper guide pin of claim 2, wherein: The inside of the oil injection port (9) is provided with a sealing plug (12), the sealing plug (12) is made of rubber, and the outside of the sealing plug (12) is provided with a plurality of convex portions.

6. The automotive caliper guide pin of claim 1, wherein: The top of the pin head (1) is provided with a limiting portion (13), and the top of the limiting portion (13) is fixedly connected with a hexagonal screw head (15).

7. The automotive caliper guide pin of claim 6, wherein: The bottom of the limiting portion (13) is fixedly connected with a threaded portion (14), and the inside of the pin head (1) is provided with a threaded hole (16) matched with the threaded portion (14).

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