CN203476994U

CN203476994U - Multi-section screw

Info

Publication number: CN203476994U
Application number: CN201320453615.0U
Authority: CN
Inventors: 李广辉; 胡玉龙
Original assignee: WUHU FORCE PRECISION MOLD Co Ltd
Current assignee: WUHU FORCE PRECISION MOLD Co Ltd
Priority date: 2013-07-29
Filing date: 2013-07-29
Publication date: 2014-03-12
Anticipated expiration: 2023-07-29

Abstract

The utility model discloses a multi-section screw and belongs to the field of mechanical parts. The multi-section screw comprises a screw cap and a split type screw rod, wherein the split type screw rod comprises a head rod and sub-rods which can be mutually connected; a first joint, a thread and a first connecting cavity are sequentially arranged on each sub-rod, each first joint is fixed on one end, which is provided with the thread, of each sub-rod, and each first connecting cavity is located in a polished rod at the other end of each sub-rod; each first joint comprises locking blocks and a shaft which are integrally formed; a screw head, a thread and a second connecting cavity are sequentially arranged on the head rod from bottom to top, the screw head is located at one end, which is provided with the thread, of the head rod, and the connecting cavity is located in a polished rod at the other end of the head rod. The screw rod comprises the head rod and the sub-rods which are combined together through mutually matched joints and connecting cavities, and the corresponding number of the sub-rods can be selected according to lengths of parts to be connected, so that the multi-section screw is convenient to use and reasonable in design.

Description

A kind of ten thousand joint screws

Technical field

The invention belongs to mechanical parts field, more particularly, relate to a kind of ten thousand joint screws.

Background technique

At present, the structure of general general General purpose screw is integrated formed structure, is all directly to comprise screw head and screw rod, and screw rod is rectilinear, and when connecting object general length, single, this type of screw application is comparatively extensive.For example: China Patent No. is 98803570.7, open day is on April 19th, 2000, and disclosed a name is called the patent document of screw, has screw rod (3), head (2) and drill bit (5) on this screw (1).Screw rod is threaded (4) on (3).The flange (6) that it is (B) that head (2) has with supporting surface (12) axial distance, the intercept (7) that wherein screw rod side is connected on flange has instrument bayonet socket (8).Therefore screw head (2) can be located by the axially reliable circuit card of instrument in flange (6), and this instrument can locate to transmit necessary moment of torsion in instrument bayonet socket (8) simultaneously.

But, running into while connecting compared with thick parts or multi-layer part, above-mentioned screw be not long be exactly curtailment, affect join strength and affect attractive in appearancely, can not meet connection needs.Therefore, if screw designs can be become to the split type structure that can combine, just can not be subject to the restriction of connecting length completely, energy flexible Application is in various occasions.

Summary of the invention

the problem that 1, will solve

For the above-mentioned problems in the prior art, the invention provides a kind of ten thousand joint screws, its be a kind of can be according to the needs of connecting length, and the knockdown screw that can freely convert, no matter be long parts or connecting a plurality of parts can apply at any time, reasonable in design.

2, technological scheme

In order to address the above problem, the technical solution adopted in the present invention is as follows:

Ten thousand joint screws, comprise screw cap, also comprise split type screw rod, and described split type screw rod comprises head rod and minute bar, and one end of one end of described head rod and minute bar cooperatively interacts and links together.

Further, be provided with successively the first joint, screw thread and the first connection chamber on described minute bar, described the first joint is fixed on screwed one end of minute bar, and described the first connection chamber is positioned at a minute polished rod for the bar the other end; Described the first joint comprises latch and axis body, and described latch and axis body are one-body molded; Described latch has 3, is segment structure, three centered by axis body around the one end that is arranged in axis body; Described head rod is from bottom to top provided with screw head, screw thread and the second connection chamber successively, and described screw head is positioned at the screwed one end of head rod, and described connection chamber is positioned at the polished rod of the head rod the other end.

Further, described the second connection chamber comprises the guiding groove axially arranging along head rod and the locating slot radially arranging along head rod, and described locating slot is positioned at the bottom of the sidewall of guiding groove; The shape of the cross section of described locating slot and guiding groove all matches with the shape of latch; On the end face of one end of described screw cap, be connected with the second joint, described the second joint is identical with the first joint; Within described minute, bar has N, and described N is more than or equal to 1.

3, beneficial effect

Than prior art, beneficial effect of the present invention is:

Screw rod of the present invention comprises head rod and minute bar, and both combine by the joint and the connection chamber that cooperatively interact, can select according to the length of required connected element minute bar of respective numbers; In addition, screw cap of the present invention is detachable after connection completes, and can not stay projection in the connecting surface of parts, does not affect the appearance, easy to use, reasonable in design.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is the structural representation of joint of the present invention;

Fig. 3 is the external structure schematic diagram of the second connection chamber of the present invention;

Fig. 4 is the structural representation of screw cap of the present invention;

Fig. 5 is the internal structure schematic diagram of the second connection chamber of the present invention;

Fig. 6 is the structural representation of joint of the present invention while coordinating with connection chamber;

Structural representation when Fig. 7 is joint of the present invention and connection chamber locking;

In figure: 1, screw head; 2, head rod; 3, the second connection chamber; 4, the first joint; 5, divide bar; 6, screw cap; 7, latch; 8, axis body; 9, sidewall.

Embodiment

Below in conjunction with specific embodiment, the present invention is further described.

As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, a kind of ten thousand joint screws, comprise screw cap 6, also comprise split type screw rod, split type screw rod comprises head rod 2 and a minute bar 5, one end of one end of head rod 2 and minute bar 5 cooperatively interacts and links together.

Divide on bar 5 and be provided with successively the first joint 4, screw thread and the first connection chamber, the first joint 4 is fixed on screwed one end of minute bar 5, and the first connection chamber is positioned at the polished rod of minute bar 5 the other ends; The first joint 4 comprises latch 7 and axis body 8, and latch 7 and axis body 8 are one-body molded; Latch 7 has 3, is segment structure, three centered by axis body 8 around the one end that is arranged in axis body 8; Head rod 2 is from bottom to top provided with screw head 1, screw thread and the second connection chamber 3 successively, and screw head 1 is positioned at the screwed one end of head rod 2, and connection chamber 3 is positioned at the polished rod of head rod 2 the other ends; The second connection chamber 3 comprises the guiding groove axially arranging along head rod 2 and the locating slot radially arranging along head rod 2, and locating slot is positioned at the bottom of the sidewall 9 of guiding groove; The shape of the cross section of locating slot and guiding groove all matches with the shape of latch 7; On the end face of one end of screw cap 6, be connected with the second joint, the second joint is identical with the first joint 4; Divide bar 5 to have 1.

During use, first according to minute bar 5 that need to select respective numbers of parts connecting length, head rod 2 is screwed in parts completely, again the first joint 4 on minute bar 5 is inserted in the second connection chamber 3 of head rod 2 afterbodys, turn clockwise, to divide bar 5 to screw in parts, then connect successively all minutes bars 5, finally take off screw cap 6.

Below schematically the present invention and mode of execution thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of embodiments of the present invention, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that not departing from the invention aim, without the creationary mode of structure similar to this technological scheme and the embodiment of designing, all should belong to protection scope of the present invention.

Claims

1. ten thousand joint screws, comprise screw cap (6), it is characterized in that: also comprise split type screw rod, described split type screw rod comprises head rod (2) and minute bar (5), and one end of one end of described head rod (2) and minute bar (5) cooperatively interacts and links together.

2. ten thousand save screws according to claim 1, it is characterized in that: on described minute bar (5), be provided with successively the first joint (4), screw thread and the first connection chamber, described the first joint (4) is fixed on screwed one end of a minute bar (5), and described the first connection chamber is positioned at the polished rod of a minute bar (5) the other end.

3. ten thousand save screws according to claim 2, it is characterized in that: described the first joint (4) comprises latch (7) and axis body (8), described latch (7) and axis body (8) are one-body molded; Described latch (7) has 3, is segment structure, three centered by axis body (8) around the one end that is arranged in axis body (8).

4. ten thousand save screws according to claim 1, it is characterized in that: described head rod (2) is from bottom to top provided with screw head (1), screw thread and the second connection chamber (3) successively, described screw head (1) is positioned at the screwed one end of head rod (2), and described connection chamber (3) is positioned at the polished rod of head rod (2) the other end.

5. ten thousand save screws according to claim 4, it is characterized in that: described the second connection chamber (3) comprises the guiding groove axially arranging along head rod (2) and the locating slot radially arranging along head rod (2), and described locating slot is positioned at the bottom of the sidewall (9) of guiding groove; The shape of the cross section of described locating slot and guiding groove all matches with the shape of latch (7).

6. ten thousand save screws according to claim 1, it is characterized in that: on the end face of one end of described screw cap (6), be connected with the second joint, described the second joint is identical with the first joint (4).

7. according to ten thousand joint screws described in claim 1 to 6 any one, it is characterized in that: described minute bar (5) have N, described N is more than or equal to 1.