Brake hard tube

Abstract

The utility model relates to the technical field of automobile pipe fittings, in particular to a brake hard pipe which comprises a hard pipe body and a hard pipe joint, the hard pipe body is provided with a conveying hole, the conveying hole penetrates from the end face of one end of the hard pipe body to the end face of the other end of the hard pipe body, and the hard pipe joint is arranged at one end of the hard pipe body and fixedly connected with the hard pipe body. A through round hole is formed in the end, away from the hard pipe body, of the hard pipe connector, a first annular groove is formed in the hole wall of the round hole, the conveying hole is communicated with the first annular groove, and a limiting part expanding outwards is arranged in the circumferential direction of the hard pipe connector. The device has the advantage of limiting the joint of the brake hard tube and the external brake master cylinder from moving circumferentially.

Description

Technical Field

[0001] The present application relates to the technical field of automobile pipe fittings, and more specifically to a brake hard pipe. Background Art

[0002] The brake pipe is a key component in the automobile braking system. When the vehicle is braking, the brake fluid needs to be transmitted to each brake cylinder through the brake pipe to achieve vehicle braking.

[0003] Our company currently has a brake hard pipe, such as Figure 1 and Figure 2 As shown, it includes a hard tube body 90 and a hard tube joint 91, the hard tube joint 91 is arranged at one end of the hard tube body 90 and connected to the hard tube body 90, the hard tube body 90 has a through delivery hole 901, the hard tube joint 91 has a through circular hole 911, the hole wall of the circular hole 911 has an annular groove 912, the annular groove 912 is connected to the delivery hole 901, when in use, the brake hard tube is connected to the external brake master cylinder 93 by a special bolt 92 Specifically, one end of the special bolt 92 has a thread, and the threaded end of the special bolt 92 has a vertical hole 921 and a plurality of horizontal holes 922, each of the horizontal holes 922 is connected to the vertical hole 921, and the horizontal hole 922 is connected to the annular groove 912. When the external brake master cylinder 93 is working, the brake oil flows from the vertical hole 921 to the horizontal hole 922, and flows from the horizontal hole 922 to the delivery hole 901 of the brake hard pipe. However, due to the circumferential limitation of the hard pipe joint 91, the nut part of the special bolt 92 is completely clamped with the external brake master cylinder 93. During the driving process of the vehicle body, the hard pipe joint 91 still has the risk of circumferential rotation.

[0004] Therefore, there is a need to provide a brake hard pipe that limits the circumferential movement of the connection between the brake hard pipe and the external brake master cylinder. Summary of the invention

[0005] The main purpose of the present application is to provide a brake hard tube, wherein the brake hard tube comprises a hard tube body and a hard tube joint, the hard tube body having a delivery hole, the delivery hole extending from one end face of the hard tube body to the other end face of the hard tube body, the hard tube joint being arranged at one end of the hard tube body and fixedly connected to the hard tube body, the hard tube joint having a through circular hole at the end away from the hard tube body, a first annular groove on the hole wall of the circular hole, the delivery hole being connected to the first annular groove, the hard tube joint having a limiting portion extending outward in the circumferential direction, the limiting portion being engaged with the external slot to realize circumferential restriction of the brake hard tube, compared with the prior art, the hard tube joint has the advantage of limiting circumferential movement of the connection between the brake hard tube and the external brake master cylinder.

[0006] Another object of the present application is to provide a brake tube, wherein the limiting portion is a convex column, the convex column is fixedly connected to the side wall of the tube joint, and the circumferential limiting of the brake tube is achieved by snapping the convex column into an external slot.

[0007] Another object of the present application is to provide a brake hard tube, wherein the limiting portion is a bolt, the side wall of the hard tube joint has a threaded hole, one end of the bolt having a thread is threadedly connected to the threaded hole, and the circumferential limiting of the brake hard tube is achieved by snapping the bolt into an external slot.

[0008] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a brake hard pipe, wherein the brake hard pipe comprises:

[0009] a hard tube body, the hard tube body having a delivery hole, the delivery hole extending from one end surface of the hard tube body to the other end surface of the hard tube body; and

[0010] A hard pipe joint, which is arranged at one end of the hard pipe body and fixedly connected to the hard pipe body, and has a through circular hole at the end of the hard pipe joint away from the hard pipe body, and has a first annular groove on the hole wall of the circular hole, the conveying hole is connected to the first annular groove, and the hard pipe joint has a limiting portion extending outward in the circumferential direction.

[0011] In one or more embodiments of the present application, the limiting portion is a convex column, and the convex column is fixedly connected to the side wall of the hard pipe joint.

[0012] In one or more embodiments of the present application, the limiting portion is a bolt, the side wall of the hard pipe joint has a threaded hole, and one end of the bolt having a thread is threadedly connected to the threaded hole.

[0013] In one or more embodiments of the present application, both ends of the circular hole have an expansion hole for placing a sealing ring.

[0014] In one or more embodiments of the present application, the bottom wall of each of the expanded holes has a second annular groove.

[0015] In one or more embodiments of the present application, the side wall of each of the expanded holes has two third annular grooves arranged at intervals, and one of the third annular grooves is located at the intersection of the bottom wall and the side wall of the expanded hole.

[0016] In one or more embodiments of the present application, the rigid tube body includes a first end bend, a straight tube, a second end bend and a middle bend connected in sequence, the first end bend is bent at a predetermined angle away from one end of the straight tube, both ends of the straight tube are bent at a predetermined angle, the second end bend is bent at a predetermined angle away from one end of the straight tube, and the middle section of the middle bend is bent at a predetermined angle.

[0017] In one or more embodiments of the present application, the brake hard tube also includes a plurality of buffer parts, one of the buffer parts is sleeved on the straight tube, and the two ends of the buffer part sleeved on the straight tube extend to the first end bend tube and the second end bend tube respectively, and the other buffer part is sleeved on the middle section of the middle bend tube.

[0018] In one or more embodiments of the present application, the buffer member is a heat shrinkable sheath.

[0019] In an embodiment of the present application, a brake hard tube comprises a hard tube body and a hard tube joint, the hard tube body having a delivery hole, the delivery hole extending from one end face of the hard tube body to the other end face of the hard tube body, the hard tube joint being arranged at one end of the hard tube body and being fixedly connected to the hard tube body, the hard tube joint having a through circular hole at the end facing away from the hard tube body, a first annular groove being arranged on the hole wall of the circular hole, the delivery hole being connected to the first annular groove, and the hard tube joint having a limiting portion extending outward in the circumferential direction, the circumferential restriction of the brake hard tube being achieved by engaging the limiting portion with the external clamping groove, and compared with the prior art, the hard tube joint has the advantage of limiting the circumferential movement of the connection between the brake hard tube and the external master brake cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0021] Figure 1 The figure shows a structural schematic diagram of an existing brake hard pipe;

[0022] Figure 2 The figure shows a schematic diagram of an existing brake hard pipe during installation;

[0023] Figure 3 The figure shows a structural schematic diagram of a brake hard pipe of the utility model;

[0024] Figure 4 The figure shows a schematic structural diagram of a lower hard pipe joint according to the first embodiment of the utility model;

[0025] Figure 5 The figure shows a schematic structural diagram of a lower hard pipe joint according to a second embodiment of the utility model;

[0026] Figure 6 The figure shows a cross-sectional view of a hard pipe joint under any visual angle of the utility model;

[0027] Figure 7 Pictured Figure 6 A partial enlarged view of point C. DETAILED DESCRIPTION

[0028] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0029] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0030] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0031] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0032] Application Overview

[0033] There is an existing brake hard pipe, which is completely clamped by the nut part of a special bolt and the external brake master cylinder due to the circumferential limitation of the hard pipe joint. During the driving process of the vehicle body, the hard pipe joint still has the risk of circumferential rotation.

[0034] Based on the above technical problems, the present application proposes a brake hard tube, wherein the brake hard tube has a simple structure, does not involve complicated manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the brake hard tube provided by the present application is easy to produce and low-cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0035] Schematic brake hard pipe,

[0036] refer to Figures 3 to 7 A brake hard tube according to any preferred embodiment of the present invention includes a hard tube body 10 and a hard tube joint 20.

[0037] Specifically, in any embodiment of the present utility model, if Figure 3 As shown, the hard tube body 10 has a delivery hole (not shown in the figure), and the delivery hole runs through from one end surface of the hard tube body 10 to the other end surface of the hard tube body 10; in addition, the hard tube joint 20 is provided at one end of the hard tube body 10 and is fixedly connected to the hard tube body 10, as shown in FIG. Figure 4 and Figure 6 As shown, the end of the hard pipe joint 20 away from the hard pipe body 10 has a through circular hole 201 , the hole wall of the circular hole 201 has a first annular groove 2011 , and the delivery hole is connected to the first annular groove 2011 .

[0038] It should be noted that when the end of the brake hard pipe having the hard pipe joint 20 is connected to the external brake master cylinder 93, the following method is used: Figure 2 The special bolt 92 shown in the figure has one end with a thread, and the threaded end of the special bolt 92 has a vertical hole 921 and a plurality of horizontal holes 922, each of the horizontal holes 922 is connected with the vertical hole 921, when the threaded end of the special bolt 92 passes through the circular hole 201 and is threadedly connected with the external brake master cylinder 93, the horizontal hole 922 is connected with the first annular groove 2011, and the vertical hole 921 is connected with the oil outlet of the external brake master cylinder 93, the oil outlet of the external brake master cylinder 93, the vertical hole 921, the horizontal hole 922, the first annular groove 2011 and the delivery hole together form an oil delivery channel.

[0039] In addition, in any embodiment of the present invention, Figure 3 and Figure 4As shown, the end of the hard pipe joint 20 close to the hard pipe body 10 has a sleeve portion 203, and the sleeve portion 203 has an extension hole (not marked in the figure), the extension hole is arranged vertically with the circular hole 201 and is connected to each other, one end of the hard pipe joint 20 extends into the extension hole on the sleeve portion 203, and the delivery hole is connected with the circular hole 201.

[0040] Furthermore, in order to prevent the hard pipe joint 20 from moving in the circumferential direction relative to the special bolt 92 and colliding with the upper parts of the vehicle body, in any embodiment of the utility model, Figure 3 and Figure 4 As shown, the hard pipe joint 20 has a limiting portion 202 extending outward in the circumferential direction.

[0041] It should be noted that the external vehicle body or the pump body of the external brake master cylinder 93 has a slot engaged with the limiting portion 202. Before screwing the special bolt 92, the brake hard pipe is first placed on the pump body of the external brake master cylinder 93, and the limiting portion 202 is inserted into the slot, the circular hole 201 is directly opposite to the oil outlet of the external brake master cylinder 93, and then the special bolt 92 is screwed. Obviously, by providing the limiting portion 202 and engaging the limiting portion 202 with the corresponding slot, the circumferential direction of the brake hard pipe is limited. Compared with the prior art, the circumferential direction of the brake hard pipe is only provided by the special bolt 92 to press the hard pipe joint 20 to provide friction resistance on the top and bottom surfaces of the hard pipe joint 20, the embodiment of the present application has the advantage of limiting the circumferential movement of the connection between the brake hard pipe and the external brake master cylinder, and avoiding the risk of the brake hard pipe making a small circumferential rotation and colliding with external objects during the driving of the vehicle body.

[0042] Further, in the first embodiment of the present utility model, as Figure 4 As shown, the limiting portion 202 is a convex column 2021, and the convex column 2021 is fixedly connected to the side wall of the hard pipe joint 20, and its fixed connection method includes but is not limited to welding.

[0043] It should be noted that, during installation, the boss 2021 is inserted into the external slot to limit the position of the brake tube in the circumferential direction.

[0044] Figure 5 The figure shows a second embodiment of the utility model. In the second embodiment, the limiting portion 202 is a bolt 2022. The side wall of the hard pipe connector 20 has a threaded hole (not marked in the figure). The threaded end of the bolt 2022 is threadedly connected to the threaded hole.

[0045] It should be noted that, during installation, the bolt 2022 is inserted into the external slot, and the nut portion of the bolt 2022 is fitted with the side wall of the slot, so that the position of the brake tube in the circumferential direction is limited by the bolt 2022 .

[0046] It should also be noted that the advantage of the second embodiment over the first embodiment is that the distance between the nut portion of the bolt 2022 and the outer wall of the hard pipe joint 20 can be adjusted by screwing the bolt 2022. When the distance between the external slot and the oil outlet of the brake master cylinder 93 body is different, the nut portion can be inserted into the slot by screwing the bolt 2022. The advantage of the first embodiment over the second embodiment is that since the bolt 2022 is a standard part, the thickness of the nut portion of the bolt 2022 is constant, which results in a constant contact area between the bolt 2022 and the side wall of the slot, and the height dimension of the boss 2021 can be processed into a specific dimension according to actual needs, which results in the contact area between the boss 2021 and the side wall of the slot being generally larger than the contact area between the bolt 2022 and the side wall of the slot, and is suitable for vehicles with heavy loads or intense driving conditions.

[0047] In addition, in order to prevent the brake oil from penetrating outward from both ends of the circular hole 201 , sealing rings need to be placed at both ends of the hard pipe joint 20 .

[0048] In view of this, in any embodiment of the present invention, if Figure 6 As shown, both ends of the circular hole 201 have an expansion hole 2012 for placing the sealing ring.

[0049] It should be noted that the height dimension of the sealing ring is greater than the depth of the expanded hole 2012. When the sealing ring is placed in the expanded hole 2012, the sealing ring extends out of the hole mouth of the expanded hole 2012 by a predetermined distance, so that after the special bolt 92 is tightened, the sealing ring is compressed and deformed, and fills the gap between the side wall and bottom wall of the sealing ring and the wall of the expanded hole 2012, so as to improve the sealing effect.

[0050] Furthermore, in any embodiment of the utility model, when the sealing ring is placed in the expanded hole 2012, glue is first applied to the side of the sealing ring close to the expanded hole 2012. When the sealing ring is placed in the expanded hole 2012, the sealing ring is bonded to the hard pipe joint 20, and at the same time, the glue further fills the gap between the sealing ring and the expanded hole 2012.

[0051] Further, in any embodiment of the present utility model, in order to improve the sealing performance, as Figure 7As shown, the bottom wall of each of the reamed holes 2012 has a second annular groove 20121, and the side wall of each of the reamed holes 2012 has two third annular grooves 20122 arranged at intervals, and one of the third annular grooves 20122 is located at the intersection of the bottom wall and the side wall of the reamed hole 2012.

[0052] It should be noted that, by providing the second annular groove 20121 and the third annular groove 20122 , both the glue and the sealing ring after being deformed under pressure can fill the second annular groove 20121 and the third annular groove 20122 .

[0053] Further, in any embodiment of the present utility model, in order to meet the installation avoidance requirements of a specific vehicle model, such as Figure 3 As shown, the hard tube body 10 includes a first end bend 102, a straight tube 103, a second end bend 104 and a middle bend 105 connected in sequence, the first end bend 102 is bent at a predetermined angle at one end away from the straight tube 103, both ends of the straight tube 103 are bent at a predetermined angle, the second end bend 104 is bent at a predetermined angle at one end away from the straight tube 103, and the middle section of the middle bend 105 is bent at a predetermined angle.

[0054] Further, in any embodiment of the present invention, if Figure 3 As shown, the brake hard pipe also includes a plurality of buffer components 30, one of the buffer components 30 is sleeved on the straight pipe 103, and the two ends of the buffer component 30 sleeved on the straight pipe 103 extend to the first end bend pipe 102 and the second end bend pipe 104 respectively, and the other buffer component 30 is sleeved on the middle section of the middle bend pipe 105.

[0055] Specifically, in any embodiment of the present utility model, the buffer member 30 is a heat shrinkable sheath tube. It should be noted that before the heat shrinkable sheath tube is inserted into the hard tube body 10, the inner hole diameter of the heat shrinkable sheath tube is larger than the tube diameter of the hard tube body 10. After the heat shrinkable sheath tube is moved to the specified position, the heat shrinkable sheath tube is heated to reduce the diameter of the heat shrinkable sheath tube and make an interference fit with the brake hard tube. By providing the buffer member 30, the risk of the hard tube body 10 being damaged can be effectively reduced during the installation of the brake hard tube or the driving of the vehicle.

[0056] In summary, the brake hard pipe according to the embodiment of the present application is explained, which provides the brake hard pipe with advantages such as limiting the circumferential movement of the connection between the brake hard pipe and the external brake master cylinder.

[0057] It is worth mentioning that in the embodiment of the present application, the brake hard tube has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the brake hard tube provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further facilitating product promotion and use.

[0058] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A brake hard pipe, characterized in that: The brake hard pipe comprises a hard tube body, the hard tube body having a delivery hole, the delivery hole extending from one end surface of the hard tube body to the other end surface of the hard tube body; and A hard pipe joint, which is arranged at one end of the hard pipe body and fixedly connected to the hard pipe body, and has a through circular hole at the end of the hard pipe joint away from the hard pipe body, and has a first annular groove on the hole wall of the circular hole, the conveying hole is connected to the first annular groove, and the hard pipe joint has a limiting portion extending outward in the circumferential direction.

2. The brake hard tube according to claim 1, characterized in that: The limiting portion is a convex column, and the convex column is fixedly connected to the side wall of the hard pipe joint.

3. The brake hard tube according to claim 1, characterized in that: The limiting part is a bolt, the side wall of the hard pipe joint has a threaded hole, and one end of the bolt with a thread is threadedly connected with the threaded hole.

4. The brake hard tube according to claim 2 or 3, characterized in that: Both ends of the circular hole are provided with an expansion hole for placing a sealing ring.

5. The brake hard tube according to claim 4, characterized in that: The bottom wall of each of the expanded holes has a second annular groove.

6. The brake hard tube according to claim 5, characterized in that: The side wall of each of the expanded holes has two third annular grooves arranged at intervals, and one of the third annular grooves is located at the junction of the bottom wall and the side wall of the expanded hole.

7. The brake hard tube according to claim 6, characterized in that: The hard tube body includes a first end bend, a straight tube, a second end bend and a middle bend connected in sequence. The first end bend is bent at a predetermined angle away from one end of the straight tube, both ends of the straight tube are bent at a predetermined angle, the second end bend is bent at a predetermined angle away from one end of the straight tube, and the middle section of the middle bend is bent at a predetermined angle.

8. The brake hard tube according to claim 7, characterized in that: The brake hard tube also includes a plurality of buffers, one of which is sleeved on the straight tube, and both ends of the buffer sleeved on the straight tube extend to the first end bend and the second end bend respectively, and another buffer is sleeved on the middle section of the middle bend.

9. The brake hard tube according to claim 8, characterized in that: The buffer is a heat shrinkable sheath tube.

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