CN203428857U

CN203428857U - Hinge-and-nut combination for scissor jack

Info

Publication number: CN203428857U
Application number: CN201320410403.4U
Authority: CN
Inventors: 蒋海波; 韩进; 顾晓锋; 林来顺; 陈有源
Original assignee: NANTONG TONGRUN AUTO PARTS CO Ltd
Current assignee: NANTONG TONGRUN AUTO PARTS CO Ltd
Priority date: 2013-07-11
Filing date: 2013-07-11
Publication date: 2014-02-12
Anticipated expiration: 2023-07-11

Abstract

The utility model discloses a hinge-and-nut combination for a scissor jack. A first shaft shoulder outer circle and a second shaft shoulder outer circle arranged on a hinge pin body of the hinge-and-nut combination are coaxial, an arranged first shaft shoulder end face and an arranged second shaft shoulder end face are parallel to each other, and are perpendicular to the axis of the hinge pin body, a first internal thread hole is formed in the position perpendicular to the axis of the hinge pin body, a first platform surface and a second platform surface are arranged at the position perpendicular to the axis of the first internal thread hole, an electric welding entity is used for improving the connection between the first internal thread hole and external threads of an extension pipe after the first internal thread hole formed in the hinge pin body is used in cooperation with the external threads of the extension pipe in a tight screwing mode, a cone closing section and a round closing pipe are arranged on the extension pipe of the hinge-and-nut combination, a second internal thread hole is formed in an inner cylindrical hole of the round closing pipe, and a power thread pair can be formed by the second internal thread hole and an assembled scissor jack threaded rod. According to the displacement structure of the power thread pair formed by the hinge-and-nut combination and the assembled scissor jack threaded rod, the length of the scissor jack threaded rod can be reduced, the manufacturing cost can be reduced, and mechanical strength of the position of pivot joint of the scissor jack can be ensured.

Description

A kind of hinge nut combinations body for scissor-like jack

Technical field

The utility model relates to the pivot joint parts of scissor-like jack, especially a kind of for the hinge nut combinations body with car scissor-like jack.

Background technology

Be widely used in the supporting scissor-like jack of car, have and rotate the hinge pin structure that connects such jack upper support arm group and lower support arm group, and form power screw thread pair in the upright position of this hinge pin axial line and the rotary screw of jack.This pivot joint part for scissor-like jack is because its " hinge " is often called as " hinge nut block " with the feature of " nut ", conventional hinge nut block coordinates with the rotary screw in scissor-like jack body the power that rises that transmits jack, because it requires the rising of jack reaching, highly must this rotary screw be done very longly, like this as elongated power screw, to its requirement of strength, straightness accuracy, require all higher, therefore processing is got up more difficultly, easily causes off gauge or affects scissor-like jack complete machine in-use performance.The national patent CN102211744B that this case applicant has had discloses the scissor-like jack of a kind of ad hoc in power screw thread pair " Y " shape fork arm nut, this patented technology converts the position of traditional scissor-like jack power screw thread pair with fork arm nut, effectively shorten the length that forms the screw rod of screw thread pair in this patent working example with fork arm nut inner thread, reduced the generation of waste product.Through production and sales practice in the past few years and the feedback of market service condition, technical personnel is gone through redesign many times and is considered, think that the fork arm nut of existing patent linking intensity, the rigidity after the upper support arm group that makes scissor-like jack is with the pivot joint of lower support arm group decreases, and this fork arm formula nut manufacture difficulty and all relative raisings of cost.

Summary of the invention

Task of the present utility model is the deficiency for above-mentioned background technology and correlation technique scheme, be conceived to design and both adhered to traditional screw rod significantly to shorten, can meet the length of the required screw rod of scissor-like jack jacking stroke, the internal thread hole of traditional hinge nut block is suitably expanded again simultaneously, so that the internal thread hole that this has been expanded can be special with one the outside thread of extension nut casing one end screw, and be provided with and can form power screw thread pair with screw thread outside power screw at the other end that extends nut casing, thereby overcome again the deficiencies in the prior art, reduce manufacturing cost, improve the connection quality at drive-connecting shaft place, use more steadily reliable.

Above-mentioned purpose of the present utility model is achieved through the following technical solutions: a kind of hinge nut combinations body for scissor-like jack, comprise link pin axis body, the first shaft shoulder cylindrical, the second shaft shoulder cylindrical, the first shaft shoulder end face and the second shaft shoulder end face, it is characterized in that: the first shaft shoulder cylindrical and the second shaft shoulder cylindrical that link pin axis body is provided with are coaxial; Offering the first internal thread hole with the upright position of hinge pin body axial line, in the upright position of the axial line with the first internal thread hole, be provided with the first flat surface and the second flat surface; The first shaft shoulder end face being provided with on link pin axis body is parallel to each other with the second shaft shoulder end face being provided with, and vertical with hinge pin body axial line respectively; The first internal thread hole on link pin axis body and the extension pipe external thread rotary flush fit on fabricate block extension pipe; On fabricate block extension pipe, offer cone closing in section and closing in pipe, in the interior cylindrical hole of closing in pipe, offer and can form with the outside thread of joined scissor-like jack screw rod the second internal thread hole of power screw thread pair; Extension pipe outside thread and the first internal thread hole screw after also tightening, before closing in, between pipe external cylindrical surface and the first flat surface, adopt electric welding entity further to reinforce connection.

Wherein, further comprise closing in pipe and close up before pipe take extension pipe axial line as public axial line.

Wherein, further comprise that the extension pipe through hole of fabricate block extension pipe all be take extension pipe axial line as public axial line with the second internal thread hole, and extension pipe through hole is enough large, to can be held into the screw rod entity of joined scissor-like jack.

Wherein, further comprise: after hinge nut combinations body is loaded into joined scissor-like jack, the outer face of its first shaft shoulder cylindrical can lock to rush riveting mode.

The beneficial effect that the utility model compared with prior art has is: with internal and external threads, link pin axis body is connected with fabricate block extension pipe, and impose the connection that electric welding entity is strengthened this fabricate block, make hinge nut combinations body and the frame mode of the power screw thread pair displacement of join jack screw formation more can effectively shorten the length of jack screw, not only reduce manufacturing cost but also guaranteed the mechanical strength of jack pin-jointed structure, further guaranteed safety and the reliability of product in using.

Accompanying drawing explanation

The accompanying drawing explanation of embodiment:

Figure 1 shows that the utility model embodiment is applied to the complete machine stereoscopic-state figure after joined scissor-like jack;

Figure 2 shows that the stereoscopic-state figure of the present embodiment expression hinge nut combinations body;

Figure 3 shows that the assembling schematic isometric of fabricate block extension pipe and the link pin axis body of the utility model embodiment;

Figure 4 shows that the link pin axis body stereoscopic-state schematic diagram of the present embodiment;

Figure 5 shows that the stereoscopic-state figure of the fabricate block extension pipe of the present embodiment;

Figure 6 shows that the relative Fig. 4 front view of the present embodiment;

Figure 7 shows that the present embodiment " A-A " cutaway view on Fig. 6;

Figure 8 shows that the left view of the relative Fig. 5 of the present embodiment;

Figure 9 shows that the present embodiment " B-B " cutaway view on Fig. 8;

Figure 10 shows that the birds-eye view of the relative Fig. 2 of the present embodiment;

Figure 11 shows that the present embodiment " D-D " cutaway view on Figure 10.

Parts shown in each label of accompanying drawing and relevant geometric element title are as follows:

1 link pin axis body, 2 first shaft shoulder cylindricals, 3 second shaft shoulder cylindricals, 4 first shaft shoulder end faces, 5 second shaft shoulder end faces, 6 first flat surface, 7 second flat surface, 8 hinge pin body axial lines, 9 first internal thread holes, 10 fabricate block extension pipes, 11 extension pipe outside threads, 12 extension pipe axial lines, 13 cones closing in sections, 14 closing in pipes, 15 screw rods, 16 second internal thread holes, pipe before 17 closing ins, 18 electric welding entities, 19 extension pipe through holes, 20 scissor-like jacks.

The specific embodiment

Below in conjunction with the accompanying drawing of embodiment, the utility model will be further described, by the understanding that contributes to the public to this case technology contents and effect, but the description of embodiment is not formed to the restriction to the technical program, any according to this case design, done only for pro forma equivalent transformation, all should be considered as the category of this case technical scheme.

From each accompanying drawing, in the utility model embodiment, each framing member all has good structural machinability and assembly process process, the first shaft shoulder cylindrical 2 and the second shaft shoulder cylindrical 3 that link pin axis body 1 is provided with are coaxial, make them corresponding with the coaxial aperture on the supporting arm left side plate of joined scissor-like jack 20; In the upright position with hinge pin body axial line 8, offer the first internal thread hole 9, the fabricate block extension pipe axial line 12 of guaranteeing extension and hinge pin body axial line 8 are in vertical state, in the upright position of the axial line with the first internal thread hole, be provided with the first flat surface 6 and the second flat surface 7, make the existing good processibility of link pin axis body 1, can reduce materials cost again; The first shaft shoulder end face 4 being provided with on link pin axis body 1 and the second shaft shoulder end face 5 being provided with are parallel to each other, and vertical with hinge pin body axial line 8 respectively, ensure the operation of the integrally-built mechanism of join jack; The first internal thread hole 9 on link pin axis body 1 screws and coordinates with the extension pipe outside thread 11 on fabricate block extension pipe 10; The cone that offers on fabricate block extension pipe 10 structural elements such as section 13 and closing in pipe 14 that close up provide take the easy processing characteristics of reshaping of the fabricate block extension pipe that section bar is raw material, offer and can form with the outside thread of joined scissor-like jack screw rod 15 the second internal thread hole 16 of power screw thread pair in the interior cylindrical hole of closing in pipe 14; Extension pipe outside thread 11 and the first internal thread hole 9 screw after also tightening, adopt electric welding entity 18 further to reinforce and connect before closing between pipe 17 external cylindrical surfaces and the first flat surface 6; Closing in pipe 14 be take extension pipe axial line 12 as public axial line with the front pipe 17 that closes up; The extension pipe through hole 19 of fabricate block extension pipe 10 all be take extension pipe axial line 12 as public axial line with the second internal thread hole 16, and enough large extension pipe through hole 19, can be held into the screw rod entity of joined scissor-like jack, make the operating screw rod entity of jack mechanism in the axial flexible of screw rod freely; After the hinge nut combinations body described in this case is loaded into joined scissor-like jack, the outer face of its first shaft shoulder cylindrical 2 can be rushed riveting mode and be locked; With internal and external threads, link pin axis body is connected with fabricate block extension pipe, and the connection that electric welding entity is reinforced this fabricate block in addition, this length that makes hinge nut combinations body and the frame mode of the power screw thread pair displacement of join jack screw formation can effectively shorten jack screw, reduce again manufacturing cost, guaranteed mechanical strength, the rigidity of jack pin-jointed structure, and then guaranteed safety, reliability in product use.

Claims

1. the hinge nut combinations body for scissor-like jack, comprise link pin axis body, the first shaft shoulder cylindrical, the second shaft shoulder cylindrical, the first shaft shoulder end face and the second shaft shoulder end face, it is characterized in that: the first shaft shoulder cylindrical (2) that link pin axis body (1) is provided with and the second shaft shoulder cylindrical (3) are coaxial; In the upright position with hinge pin body axial line (8), offer the first internal thread hole (9), in the upright position of the axial line with the first internal thread hole, be provided with the first flat surface (6) and the second flat surface (7); The first shaft shoulder end face (4) being provided with on link pin axis body (1) is parallel to each other with the second shaft shoulder end face (5) being provided with, and vertical with hinge pin body axial line (8) respectively; The first internal thread hole (9) on link pin axis body (1) screws and coordinates with extension pipe outside thread (11) on fabricate block extension pipe (10); On fabricate block extension pipe (10), offer cone closing in section (13) and a closing in pipe (14), in the interior cylindrical hole of closing in pipe (14), offer and can form with the outside thread of joined scissor-like jack screw rod (15) second internal thread hole (16) of power screw thread pair; Extension pipe outside thread (11) screws after also tightening with the first internal thread hole (9), adopts electric welding entity (18) further to reinforce and connect between (17) external cylindrical surface of pipe before closing in and the first flat surface (6).

2. a kind of hinge nut combinations body for scissor-like jack according to claim 1, is characterized in that: before further comprising closing in pipe (14) and closing up, pipe (17) be take extension pipe axial line (12) as public axial line.

3. a kind of hinge nut combinations body for scissor-like jack according to claim 1, it is characterized in that: the extension pipe through hole (19) that further comprises fabricate block extension pipe (10) all be take extension pipe axial line (12) as public axial line with the second internal thread hole (16), and extension pipe through hole (19) is enough large, to can be held into the screw rod entity of joined scissor-like jack.

4. a kind of hinge nut combinations body for scissor-like jack according to claim 1, it is characterized in that: be further included in after hinge nut combinations body is loaded into joined scissor-like jack, the outer face of its first shaft shoulder cylindrical (2) can lock to rush riveting mode.