CN201497848U

CN201497848U - Mid-spreader

Info

Publication number: CN201497848U
Application number: CN2009201715097U
Authority: CN
Inventors: 李燕卿
Original assignee: BEIJING YILI FANGXING SCREEN TECHNOLOGY Co Ltd
Current assignee: BEIJING YILI FANGXING SCREEN TECHNOLOGY Co Ltd
Priority date: 2009-08-21
Filing date: 2009-08-21
Publication date: 2010-06-02
Anticipated expiration: 2019-08-21

Abstract

A mid-spreader comprises a knob, a support, a seal cover, and an outer rod, wherein threaded holes are formed in the center of the knob; a round hole is also formed on the knob; a stop spring is mounted in the hole; a limit ball is arranged on the spring; a plurality of recess sections capable of matching the limit ball are formed on the support; the limit ball can be arranged on the recess sections of the support; central holes are formed in the center of the bracket; chutes are formed on the center hole; a convex edge is arranged on the support and is located in a groove formed by a pad and the knob; the pad is fixed on the knob; the seal cover is fixed on the support; a center shaft with a bottom bevel surface is provided with threads; a bump capable of moving in the chute is arranged on the center shaft; and a central joint is hinged with the bracket through a connection shaft and is matched with the bottom bevel surface of the central shaft. The mid-spreader with the structure is more practicable, and can not only adjust the opening angle at random but also widen the height range of the mid-spreader.

Description

Mid-stretcher

One, technical field

The utility model relates to a kind of photographic goods, the mid-stretcher that uses on particularly a kind of tripod.

Two, background technology

In the actual life, in order to be taken pictures clearly, photographic goods generally all need to use tripod to support, and mid-to supporting tripod necessary part especially on the tripod.The most original is mid-simple in structure, function singleness, only can play the effect of fixed tripod, support bar length is fixed, no extension rod, can not carry out angular transformation, can not regulate height, have significant limitation, can't satisfy cameraman's demand, in order to overcome its limitation, the mid-stretcher of Shi Yonging as shown is part sectioned view in the market, though increased extension rod, the top is provided with the gear knob, by regulation stall, thus the angle of conversion tripod and the height, but because this mid-be to determine angle by the set gear of knob, and the gear on the knob is fixing limited, so mid-angle and height can not carry out regulated at will, the scope of adjusting is very limited, has limited the washability of mid-opening angle, mid-angle, tripod ground floor area and height can not regulated at will, therefore bigger limitation and the inconvenience of existence for the user.

Three, summary of the invention

The purpose of this utility model is: design the mid-of a kind of new tripod, make it can regulate its height and angle arbitrarily, have the extension rod function again, and outward appearance is light and handy, and is easy to carry, economical and practical, can bring more convenience to the cameraman, satisfy cameraman's requirement.

The utility model adopts following structure to realize above-mentioned purpose, a kind of mid-stretcher, comprise knob, support, capping, outer bar, wherein the knob center is provided with threaded hole, also be provided with a circular hole on the knob, the gear spring is housed in the hole, a spacing ball is arranged on the spring, support is provided with a plurality of recesses that can cooperate with spacing ball, spacing ball can place on the support recess, carriage center is provided with center pit, has chute on the center pit, also is provided with a chimb on the support, chimb places in the groove of pad and knob composition, spacers is on knob, and capping is fixed on the support, and capping is provided with the hole that outer bar is passed, one bottom has the central shaft on inclined-plane, central shaft is provided with screw thread, and this screw thread cooperates with the threaded hole at knob center, and central shaft also passes the center pit on the support, central shaft is provided with a projection that can move in chute, be connected with the center sub of band cambered surface on the outer bar, center sub is hinged on the support by coupling shaft, and cooperates with the inclined-plane of central shaft bottom.

The cambered surface of center sub is an Archimedes' helicoid.

Also be provided with the secondary extension rod on the outer bar, be provided with the locking mechanism of the length of adjustable lever between outer bar and extension rod.

Be fixed with collar on the coupling shaft.

Adopt as above structure centre axle to be positioned at the center of support, the inclined-plane on the central shaft is in the bottom, and central shaft has screw thread on one's body, the knob central part also has a threaded hole, utilize screw thread, central shaft can be screwed in the knob hole, when rotary knob, central shaft can move up and down along screw thread, projection on it can move along the chute in the support, and projection has guaranteed that central shaft can not rotate with knob, and three outer bars are distributed in around the central shaft, extension rod is equipped with in outer bar inside, and the junction is provided with locking device.

Tripod with this mid-stretcher can be practical more, not only can the mid-open angle of regulated at will, and make that the altitude range of mid-extension is also more wide, thereby satisfy the request for utilization of user to tripod, tripod ground level and angle can be regulated arbitrarily as required, make the consumer need not spend too expensive money just can use multiple functional, light and handy mid-easily stretcher, along with the development of apparatus for making a video recording, be applicable to the use of different types of machines, be convenient to promote and use.

Four, description of drawings

Fig. 1 is mid-exploded view

Fig. 2 is mid-package assembly diagrammatic cross-section

Fig. 3 is the D----D sectional view of figure two

Fig. 4 is the C----C sectional view of figure two

Fig. 5 is the partial enlarged drawing of figure two

Fig. 6 is the E---E sectional view of figure two

Fig. 7 is the working state figure of mid-stretcher

Fig. 8 is traditional mid-structural drawing

Five, embodiment

As Fig. 1,2, shown in 5, comprise knob 2, support 3, capping 6, outer bar 8, wherein knob 2 centers are provided with threaded hole 22, also be provided with a circular hole 23 on the knob 2, gear spring 20 is housed in the hole 23, one spacing ball 19 is arranged on the spring 20, support 3 is provided with a plurality of recesses 31 that can cooperate with spacing ball 19, spacing ball 19 can place on the recess 31 of support 3, support 3 centers are provided with center pit 32, have chute 33 on the center pit 32, also be provided with a chimb 34 on the support 3, chimb 34 places in the groove 41 of pad 4 and knob 2 compositions, pad 4 is fixed on the knob 2, capping 6 is fixed on the support 3, capping 6 is provided with the hole 61 that outer bar 8 is passed, one bottom has the central shaft 5 on inclined-plane 51, central shaft 5 is provided with screw thread, this screw thread cooperates with the threaded hole 22 at knob 2 centers, and central shaft 5 also passes the center pit 32 on the support 3, and central shaft 5 is provided with a projection 52 that can move in chute 33, be connected with the center sub 7 of band cambered surface on the outer bar 8, center sub 7 is hinged on the support 3 by coupling shaft 17, and cooperates with the inclined-plane 51 of central shaft 5 bottoms, and 1 is loam cake.

The cambered surface of center sub 7 is an Archimedes' helicoid.

Also be provided with secondary extension rod 15 on the outer bar 8,15 of outer bar 8 and extension rods are provided with the locking mechanism B of the length of adjustable lever, and this locking mechanism comprises: lock sleeve 9, revolve 10, tie down screw 11, latch segment 12, pad 13, stop block 14, extension rod 15, support body joint 16.

Be fixed with collar 18 on the coupling shaft 17, the effect of collar 18 can make coupling shaft 17 well be fixed on the support 3.

Knob 2 is positioned at whole mid-top, regulate mid-open angle by knob 2, when rotating counterclockwise knob 2, spacing ball 19 in the knob 2 rotates counterclockwise on the recess 31 of support 3 thereupon, meanwhile, central shaft 5 is to moving down, outer bar 8 relative angles strengthen, when the mid-mid-angle that needs that reaches, the knob 2 that stops the rotation, spacing ball 19 can be parked on the support 3 on wherein the recess 31, thereby knob 2 can oneself not rotated again, simultaneously, because central shaft 5 is to be threaded with knob 2, and center sub 7 is tangent with the inclined-plane 51 on the central shaft 5, stressed is vertically downward direction, this power can make screw thread pin, thereby but also fixed knob 2 no longer rotates, thereby keep the mid-opening angle of needs.When clockwise rotating knob 2, spacing ball 19 in the knob 2 clockwise rotates on the recess of support 3 thereupon, meanwhile, central shaft 5 upwards moves, outer bar 8 relative angles reduce, mid-A regains open angle, can regulate mid-open angle by rotary knob 2, thereby arrives the purpose of regulating tripod C.

As Fig. 3,4, shown in 5, central shaft 5 is positioned at the centre of support 3, when being rotated counterclockwise knob, support 3 fixes with capping 6 and relative knob 2 does not move, screw thread in the hole 22 of central shaft 5 axle bodies this moment on knob 2 carries out relative motion, owing to have projection 52 and projection 52 spacing in the chute 33 of support 3 on the central shaft 5, projection 52 in the present embodiment is a pin, thereby central shaft 5 can only move up and down, because being bottoms, central shaft 5 has inclined-plane 51, up-narrow and down-wide, center sub 7 is hinged on the support 3, the center sub 7 that is distributed on central shaft 5 inclined-planes 51 can rotate along with moving of central shaft 5, center sub 7 can rotate on coupling shaft 17 along with the motion of central shaft 5, and three outer bars 8 and center sub 7 are fixed together, the relative angle of three bars 8 also just becomes big so, thereby makes mid-opening angle become big.According to this principle, when central shaft 5 was screwed in the hole fully, three outer bar 8 relative angles were 0 °, mid-closing, and tripod C packs up.When central shaft 5 moves down when moving on to maximum, three outer bar relative angles can be 180 °, are flared to level, rotary knob 2, and mid-open angle can change arbitrarily in 0-180 °.

As shown in Figure 6, extension rod 15 is positioned at outer bar 8 inside, outer bar 8 bottoms are equipped with lock sleeve 9, pad 13 is installed in the lock sleeve 9, lock sleeve 9 has a cavernous structure, and in lock sleeve inside, latch segment 12 is loaded onto in the position that faces the hole, from lock sleeve 9 outsides, tie down screw 11 is screwed in the hole, and on tie down screw 11, loads onto and revolve, when revolving when turning clockwise 10 10, along with moving of tie down screw 11, latch segment 12 compresses, and when being rotated counterclockwise, latch segment 12 unclamps, thereby scalable extension rod 15 length, extension rod 15 bottom installation frame body joints 16.Mid-stretcher A is connected as shown in the figure with tripod C.

Claims

1. mid-stretcher, it is characterized in that, comprise knob, support, capping, outer bar, wherein the knob center is provided with threaded hole, also be provided with a circular hole on the knob, the gear spring is housed in the hole, a spacing ball is arranged on the spring, support is provided with a plurality of recesses that can cooperate with spacing ball, spacing ball can place on the support recess, carriage center is provided with center pit, has chute on the center pit, also is provided with a chimb on the support, chimb places in the groove of pad and knob composition, spacers is on knob, and capping is fixed on the support, and capping is provided with the hole that outer bar is passed, one bottom has the central shaft on inclined-plane, central shaft is provided with screw thread, and this screw thread cooperates with the threaded hole at knob center, and central shaft also passes the center pit on the support, central shaft is provided with a projection that can move in chute, be connected with the center sub of band cambered surface on the outer bar, center sub is hinged on the support by coupling shaft, and cooperates with the inclined-plane of central shaft bottom.

2. mid-stretcher according to claim 1 is characterized in that, the cambered surface of center sub is an Archimedes' helicoid.

3. mid-stretcher according to claim 1 and 2 is characterized in that, also is provided with the secondary extension rod on the outer bar, is provided with the locking mechanism of the length of adjustable lever between outer bar and extension rod.

4. mid-stretcher according to claim 1 is characterized in that, is fixed with collar on the coupling shaft.