CN210126551U

CN210126551U - Integrated buckling power steering tube

Info

Publication number: CN210126551U
Application number: CN201920486045.2U
Authority: CN
Inventors: 鲍伟正; 周俊杰; 陈伟民; 吴仲斌; 裘善明
Original assignee: Zhejiang Fuming Industrial Machinery Co Ltd
Current assignee: Zhejiang fuming Technology Co.,Ltd.
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2020-03-06
Anticipated expiration: 2029-04-11

Abstract

The utility model belongs to the technical field of the technique of steering tube and specifically relates to a power steering tube is withheld to integral type. This power steering pipe is withheld to integral type includes: the pipe comprises a pipe body and a sleeve which is connected outside the pipe body in a buckling and pressing mode through a tooling die, wherein a buckling and pressing connecting part is arranged at the end part of one end of the sleeve, and a buckling and pressing connecting groove matched with the buckling and pressing connecting part is formed in the pipe body; the tooling die comprises: the pre-pressing punch is used for extruding the buckling and pressing connecting part to deform the buckling and pressing connecting part, and the pre-pressing clamping die is used for fixing the pipe body. In the utility model, the axle hole type of the pre-pressing clamping die can be suitable for the buckling connection operation between the steering pipes and the sleeves with different specifications; compared with the existing buckling and pressing die, the structure of the tooling die is simpler; when the buckling operation is carried out, the buckling connection part of the sleeve can automatically correspond to the buckling connection groove of the pipe body, so that the operation is simple and the use is convenient.

Description

Integrated buckling power steering tube

Technical Field

The utility model belongs to the technical field of the technique of steering tube and specifically relates to a power steering tube is withheld to integral type.

Background

With the development of the automobile industry, hydraulic power steering systems are becoming popular in the fields of cars, micro-cars, and the like. The high-pressure side pressure of the hydraulic power-assisted steering system is high, the hose is required to have high pressure resistance, and meanwhile, the hydraulic power-assisted steering pipe assembly is required to have a reliable connection mode, so that the sealing performance and the anti-pulling performance of a product are guaranteed.

Referring to fig. 1 and 2, a buckling and pressing joint 2 is welded on the surface of a core pipe 1, a buckling and pressing sleeve 3 is riveted on the buckling and pressing joint 2, and a hose 4 is arranged between the buckling and pressing joint 2 and the buckling and pressing sleeve 3. In the structure of the prior art, the buckling and pressing joint 2 is turned by a bar or thick-wall pipe, so that the consumption of raw materials is high, and the production efficiency is low; the core tube 1 and the buckling connector 2 are connected in a welding mode, the process is complex, the production efficiency is low, air holes, sand holes and other defects are prone to being generated in welding, leakage of connected products is caused, and pressure resistance is reduced.

Referring to fig. 3, a chinese utility model patent publication No. CN201475555U discloses a double-drum assembly joint for a hydraulic power steering tube, which includes a core tube, a buckling sleeve and a hose, all of which are connected together by riveting, wherein the outer surface of the core tube includes a plurality of convex surfaces, the inner surface corresponding to the convex surfaces is a concave surface, and the hose is arranged between the core tube and the buckling sleeve. A plane is arranged between the two convex surfaces. The riveting part of the buckling sleeve is the surface of the buckling sleeve corresponding to the plane. Compared with the prior art, the surface of the core pipe adopts an integral structure formed by one-time cold heading, the surface welding buckling and pressing joint is avoided, the leakage at the welding position is avoided, and the pressure resistance is improved. And moreover, the material consumption of the buckling and pressing joint and the manufacturing process of the buckling and pressing joint are reduced, the production cost is reduced, and the production efficiency is improved. The utility model discloses a design of two drum package structure core pipes for the system still can guarantee the leakproofness and the tensile pull-off nature of product when pressure is too high.

Please refer to fig. 4, chinese utility model patent with publication number CN207594362U discloses a hose crimping mold for crimping a sleeve to connect a hose and a hard tube, the hose and the hard tube are connected through a bushing, one end of the bushing is inserted into the hose, the other end of the bushing is inserted into the hard tube, the sleeve is sleeved outside the hose, the hose crimping mold comprises a plurality of identical modules, the modules have processing surfaces in contact with the sleeve, the processing surfaces of the modules enclose a cavity, the shape of the cavity corresponds to the shape of the outer wall of the sleeve after processing, the modules are connected to a crimping machine, the crimping machine drives the modules to apply pressure to the sleeve, so that the sleeve deforms in the direction of the hose. Through setting up a plurality of modules, make up into the hose and withhold the mould for the die cavity surface that a plurality of modules correspond can be simultaneously evenly exerting oneself withhold the sleeve on the bushing, and the effect of processing is better, and it is also more convenient to operate simultaneously.

In the prior art, the outer surface of the core tube needs to be provided with a plurality of convex surfaces and then is connected by buckling and pressing, so that the core tube is complicated to process and low in efficiency; the mould is buckled through the buckling mould, the buckling mould is provided with a plurality of modules to form a corresponding cavity, the matching precision of the mould is high, the hose and the sleeve are required to be respectively positioned, and the buckling position between the hose and the sleeve cannot be automatically calibrated when deviating to influence the use of the hose.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel withhold integral type of mode and withhold power steering tube, frock mould simple structure can automatic alignment, easy operation, convenient to use.

For reaching above-mentioned advantage, the utility model provides an integral type withholds power steering pipe, include: the pipe comprises a pipe body and a sleeve which is connected outside the pipe body in a buckling and pressing mode through a tooling die, wherein a buckling and pressing connecting part is arranged at the end part of one end of the sleeve, and a buckling and pressing connecting groove matched with the buckling and pressing connecting part is formed in the pipe body; the tooling die comprises: the connecting device comprises a prepressing punch used for extruding the buckling and pressing connecting part to deform, a prepressing clamping die used for fixing the pipe body and a prepressing supporting plate used for assisting the prepressing punch to move along the central axis of the pipe body.

In an embodiment of the present invention, the crimping connecting portion and the crimping connecting groove are an interference fit.

In an embodiment of the present invention, the pre-pressing punch is used for pressing the buckling connection portion to drive the sleeve to move to a position corresponding to the buckling connection groove from a bending position bent inward of the sleeve to a buckling position perpendicular to the sleeve side wall.

In an embodiment of the present invention, the angle between the buckling connection portion and the side wall of the sleeve is 33 ° when the buckling connection portion is in the bending position.

In an embodiment of the present invention, an inner diameter dimension formed when the buckling connection portion is at the bending position is larger than an outer diameter dimension of the pipe body.

In an embodiment of the present invention, an inner diameter dimension formed when the crimping connecting portion is in the crimping position is smaller than an outer diameter dimension of the crimping connecting groove.

In an embodiment of the present invention, the pre-pressing punch and the pre-pressing clamping die are both made of Cr12 material.

In an embodiment of the present invention, the pre-pressing mold has a shaft hole.

The utility model discloses an embodiment, the shaft hole includes shaft hole anterior segment and shaft hole back end, the cross-section of shaft hole anterior segment is less than the cross-section of shaft hole back end.

In an embodiment of the present invention, the pre-pressing supporting plate is made of nylon material

In the utility model, the axle hole type of the pre-pressing clamping die can be suitable for the buckling connection operation between the steering pipes and the sleeves with different specifications; compared with the existing buckling and pressing die, the structure of the tooling die is simpler; when the buckling operation is carried out, the buckling connection part of the sleeve can automatically correspond to the buckling connection groove of the pipe body, so that the operation is simple and the use is convenient.

Drawings

Fig. 1 is a schematic view of a conventional buckling and pressing joint structure installed on a core tube.

Fig. 2 is a schematic view showing the structure of the core tube of fig. 1.

Fig. 3 is a schematic structural diagram of a conventional joint of a double-drum assembly of a hydraulic power steering tube.

Fig. 4 is a schematic structural diagram of a conventional hose crimping mold.

Fig. 5 is a schematic structural view of an integral buckling power steering tube according to a first embodiment of the present invention.

Fig. 6 is a schematic view of the sleeve of fig. 5 before it is installed.

Fig. 7 is a schematic structural view of the pre-pressing punch of the tooling die of the present invention.

Fig. 8 is a schematic structural view of the pre-pressing clamping die of the tooling die of the present invention.

Fig. 9 is a schematic structural view of the pre-pressing support plate of the tooling mold of the present invention.

Fig. 10 is a schematic view showing an installation structure of the integral swaged power steering tube of fig. 5.

Fig. 11 is a schematic structural view of a pre-pressing clamping die according to a second embodiment of the present invention.

Fig. 12 is a schematic structural view of a tube body of an integral buckling power steering tube according to a second embodiment of the present invention.

Fig. 13 is a schematic view showing an installation structure of the integral swaged power steering tube of fig. 12.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments in order to provide the best mode, structure, features and effects according to the present invention.

Referring to fig. 5-6, an integrated buckling power steering tube according to a first embodiment of the present invention includes: body 1 with through frock mould withhold and connect in the outer sleeve 2 of body 1, the tip of 2 one ends of sleeve is equipped with withholds connecting portion 21, body 1 is equipped with and withholds connecting portion 21 complex withhold spread groove 11.

Referring to fig. 7-9, the tooling mold includes: a prepressing punch 31 for pressing and deforming the fastening connection part 21, a prepressing clamping die 32 for fixing the pipe body 1, and a prepressing support plate 33 for assisting the prepressing punch 31 to move along the central axis of the pipe body 1. The prepressing punch 31, the prepressing clamping die 32 and the prepressing support plate 33 are all of cylindrical structures.

Specifically, the pre-pressing punch 31 is configured to press the crimping connection portion 21 to move the sleeve 2 to a position corresponding to the crimping connection slot 11, and press the crimping connection portion 21 to be folded from a bent position bent inward of the sleeve 2 to a crimping position perpendicular to a side wall of the sleeve 2.

The crimping connecting part 21 and the crimping connecting groove 11 are in interference fit. The inner diameter formed when the buckling connection part 21 is at the bending position is larger than the outer diameter of the pipe body 1; the crimping connecting portion 21 forms an inner diameter smaller than an outer diameter of the crimping connecting groove 11 of the tube body 1 at the crimping position. Further, the crimping connection 21 is at an angle a of 33 ° to the side wall of the sleeve 2 in the folded position.

The pre-pressing punch 31 comprises a punching part 311, a mounting part 313 and a limit convex ring 312 positioned between the punching part 311 and the mounting part 313, the punching part 311 is provided with a coaxial blind hole 311a used for being sleeved outside the pipe body 1, and the depth of the coaxial blind hole 311a is used for ensuring the corresponding position of the crimping connecting part 21 and the crimping connecting groove 11.

The pre-pressing die 32 is provided with a shaft hole. Specifically, the shaft hole includes a shaft hole front section 320 and a shaft hole rear section 321, and the cross section of the shaft hole front section 320 is smaller than that of the shaft hole rear section 321. The shaft bore rear section 321 is for receiving a partial preload punch. A stepped surface formed between the shaft hole front section 320 and the shaft hole rear section 321 is used to abut against the sleeve 2.

The pre-pressing supporting plate 33 is located between the pre-pressing clamping die 32 and the pre-pressing punch 31, and the central axes of the pre-pressing clamping die 32, the pre-pressing supporting plate 33 and the pre-pressing punch 31 are the same straight line.

The pre-pressing punch 31 and the pre-pressing clamping die 32 are both made of Cr12 material. The pre-load pallet 33 is made of a nylon material.

Referring to fig. 11-12, in the integrated buckling power steering tube according to the second embodiment of the present invention, the front section 320 of the shaft hole is a stepped hole to adapt to a tube body of another specification.

Referring to fig. 10 and 13, in practical use, the pipe body passes through the front section and the rear section of the shaft hole, the end of the sleeve with the buckling connection portion is sleeved outside the punching portion of the pre-pressing punch towards the moving direction, the pre-pressing punch is driven to drive the sleeve to move towards the rear section of the shaft hole along the central axis of the pipe body, when the end of the pipe body abuts against the bottom of the blind hole, the buckling connection portion corresponds to the buckling connection groove of the pipe body, the pre-pressing punch can drive the pipe body to move together until the end of the sleeve abuts against a step surface formed by the front section and the rear section of the shaft hole, and the pre-pressing punch is continuously driven to enable the buckling connection portion to be folded from the bending position to the buckling.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person can make modifications or changes equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are within the scope of the present invention.

Claims

1. The utility model provides a power steering tube is withheld to integral type which characterized in that, this integral type withholds power steering tube includes: the pipe comprises a pipe body and a sleeve which is connected outside the pipe body in a buckling and pressing mode through a tooling die, wherein a buckling and pressing connecting part is arranged at the end part of one end of the sleeve, and a buckling and pressing connecting groove matched with the buckling and pressing connecting part is formed in the pipe body; the tooling die comprises: the connecting device comprises a prepressing punch used for extruding the buckling and pressing connecting part to deform, a prepressing clamping die used for fixing the pipe body and a prepressing supporting plate used for assisting the prepressing punch to move along the central axis of the pipe body.

2. The integrally swaged power steering tube according to claim 1, wherein the swage connection portion and the swage attachment groove are an interference fit.

3. The integrally swaged power steering tube according to claim 1, wherein the pre-press punch is adapted to press the swage connection portion to move the sleeve from a bent position bent inward toward the sleeve to a swaged position perpendicular to the sleeve side wall while pressing the swage connection portion to move the sleeve to a position corresponding to the swage connection groove.

4. The integrally swaged power steering tube according to claim 3, wherein the swage connection is angled at 33 ° to the side wall of the sleeve in the crimped position.

5. The integrally swaged power steering tube according to claim 3, wherein said swage connection portion forms an inner diameter dimension larger than an outer diameter dimension of said tube body in a bent position.

6. The integrally swaged power steering tube according to claim 3, wherein the swage attachment portion has an inner diameter dimension smaller than an outer diameter dimension of the swage attachment groove in the swage position.

7. The integrally swaged power steering tube according to claim 3, wherein the pre-pressing punch and the pre-pressing clamp die are both made of Cr12 material.

8. The integrally swaged power steering tube according to claim 7, wherein the pre-compression clamp has an axial hole.

9. The integrally swaged power steering tube according to claim 8, wherein the shaft hole comprises a shaft hole front section and a shaft hole rear section, the shaft hole front section having a smaller cross section than the shaft hole rear section.

10. The one-piece swaged power steering tube according to claim 1, wherein the pre-load shoe is made of a nylon material.