CN201259176Y

CN201259176Y - Precision positioning device by rotating

Info

Publication number: CN201259176Y
Application number: CNU2008201207663U
Authority: CN
Inventors: 方虎
Original assignee: Ningbo Toolux Lighting Co Ltd
Current assignee: Ningbo Toolux Lighting Co Ltd
Priority date: 2008-07-02
Filing date: 2008-07-02
Publication date: 2009-06-17
Anticipated expiration: 2018-07-02

Abstract

The utility model discloses an accurate rotatable locating device, comprising a turn button (1), a lock nut (6), a bracket comprising an inner-gear locating piece (3) and a lamp rotating end comprising an outer-gear rotating part (4); the arc lug boss in the radial direction of the outer circle of the outer-gear rotating part (4) is engaged with the inner-gear ring of the inner-gear locating piece (3); the turn button shaft of the turn button (1) is connected with the lock nut by threads through the through hole of the inner-gear locating piece (3) and the through hole of the outer-gear rotating part (4); and the turn button shaft of the turn button (1) is matched with the through hole of the inner-gear locating piece (3) and the through hole of the outer-gear rotating part (4) in clearance fit. The rotating part is engaged by gear according to the structure, thereby, the lamps has advantages of accurate rotation, reliable location and less friction surface.

Description

The rotation accurate positioning device

Technical field

The utility model relates to a kind of light fixture whirligig, specifically is a kind of rotation accurate positioning device.

Background technology

At present, the structure of existing light fixture whirligig is such, knob and locking nut are pressed on light fixture part shell between pad and the support, utilize the frictional force that produces on the contact-making surface of light fixture and pad and support to fix, when light fixture is applied external force, this external force overcome friction just can make light fixture turn over an angle, after external force was removed, light fixture just was fixed.There is following defective in this structure, and the angle of rotation can't accurately be controlled, and it is unreliable to locate, and loosening easily, the work rubbing surface is big, and loss is fast.

The utility model content

The technical problems to be solved in the utility model is to provide a kind of and rotate accurately, locate reliable, the little rotation accurate positioning device of work rubbing surface.

The technical solution of the utility model is, the utility model comprises knob, locking nut, and it comprises that also the support that comprises the internal tooth keeper, the light fixture that comprises the external tooth tumbler rotate end; The ring gear of internal tooth wheel shape is arranged on the face of described internal tooth keeper, axially have through hole along this ring gear, this through hole penetrates described support; Described external tooth tumbler is one axially to have the cylinder of through hole, and this through hole penetrates described light fixture and rotates end, and described cylinder outer ring has a radially circular arc projection at least; The radially circular arc projection of described external tooth tumbler and the ring gear tooth engagement of described internal tooth keeper; The rotation axis of described knob is threaded with locking nut through the through hole of internal tooth keeper and the through hole of external tooth tumbler, and the rotation axis of described knob cooperates with the through hole of internal tooth keeper and the via clearance of external tooth tumbler.

After adopting said structure, the utility model compared with prior art, have the following advantages: rotate end because this structure comprises the support that comprises the internal tooth keeper, the light fixture that comprises the external tooth tumbler, be the tooth engagement between described internal tooth keeper and the external tooth tumbler, so, when external force promotes light fixture, the external tooth tumbler will be with the unit angular turn in the internal tooth keeper, this unit angle is decided by the ring gear number of teeth of internal tooth keeper, that is to say that this structure makes the light fixture rotation accurately, the location is reliable, and the structure of tooth engagement makes the work rubbing surface little.

Description of drawings

Fig. 1 is a kind of rotation accurate positioning device structural representation that the utility model provides.

Fig. 2 is the axial cutaway view of rotation accurate positioning device.

Fig. 3 is the front view of internal tooth keeper.

Shown in the figure: 1, knob, 2, stake body, 3, the internal tooth keeper, 4, the external tooth tumbler, 5, the light fixture rotation seat, 6, locking nut.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model comprises knob 1, locking nut 6, and it comprises that also the support that comprises internal tooth keeper 3, the light fixture that comprises external tooth tumbler 4 rotate end; As shown in Figure 3, the ring gear of internal tooth wheel shape is arranged on the face of described internal tooth keeper 3, axially have through hole along this ring gear, this through hole penetrates described support; Described external tooth tumbler 4 is one axially to have the cylinder of through hole, and this through hole penetrates described light fixture and rotates end, and described cylinder outer ring has a radially circular arc projection at least, and two radially circular arc projectioies are arranged in the present embodiment; The radially circular arc projection of described external tooth tumbler 4 and the ring gear tooth engagement of described internal tooth keeper 3; In the present embodiment, described internal tooth keeper 3 and external tooth tumbler 4 are the one-time formed plastic of injection moulding, so, described internal tooth keeper 3 and external tooth tumbler 4 are not only made simply, with low cost, produce soon, and kept the premium properties that described tooth engaging conformation has; As shown in Figure 2, described knob 1 is a knob commonly used at present, it comprises knob handle and rotation axis, this rotation axis is threaded with locking nut through the through hole of internal tooth keeper 3 and the through hole of external tooth tumbler 4, and the rotation axis of described knob 1 cooperates with the through hole of internal tooth keeper 3 and the via clearance of external tooth tumbler 4.

As shown in Figure 1, described support is made of stake body 2 and above-mentioned internal tooth keeper 3, and this stake body 2 has a groove, and the through hole of described internal tooth keeper 3 penetrates stake body 2; Have one along the axially extended boss of the through hole of this internal tooth keeper 3 on the face of described internal tooth keeper 3; As shown in Figure 2, the groove of described internal tooth keeper 3 and described stake body 2 boss by described internal tooth keeper 3 and described stake body 2 cooperates to be fixed together and constitutes described support.

Described light fixture rotates end and is made of light fixture rotation seat 5 and aforementioned external teeth tumbler 4, and this light fixture rotation seat 5 has a boss, and the through hole of described external tooth tumbler 4 penetrates this boss, axially has two grooves along this through hole on described boss; Described external tooth tumbler 4 inner rings have two radially strip projected parts; As shown in Figure 2, described light fixture rotation seat 5 is held with the described light fixture rotation of the formation that is fixed together that cooperates of the radially strip projected parts of described external tooth tumbler 4 by the groove of described light fixture rotation seat 5 with described external tooth tumbler 4.

According to said structure and assembly relation, when the user applies external force to lamp outer casing, this external force passes to described external tooth tumbler 4 by described light fixture rotation seat 5, after this external tooth tumbler 4 overcomes resistance, will be with the unit angular turn in internal tooth keeper 3, thereby make whole light fixture with the unit angular turn, so the rotation that can realize light fixture is accurate, the location is reliable and the work rubbing surface is little, and when rotating because of contacting between tooth and the tooth, can send clear and melodious rotation sound, play suggesting effect the user.

Structure of the present utility model allows other variation, is not limited to said structure, such as: described internal tooth keeper 3 can be an integral body with described stake body 2, that is to say that described support can be the integral body manufacturing; Described external tooth tumbler 4 can be an integral body with described light fixture rotation seat 5, becomes described light fixture such as single injection-molded and rotates end.

Claims

1, a kind of rotation accurate positioning device, it comprises knob (1), locking nut (6), it is characterized in that: it comprises that also the support that comprises internal tooth keeper (3), the light fixture that comprises external tooth tumbler (4) rotate end; The ring gear of internal tooth wheel shape is arranged on the face of described internal tooth keeper (3), axially have through hole along this ring gear, this through hole penetrates described support; Described external tooth tumbler (4) is one axially to have the cylinder of through hole, and this through hole penetrates described light fixture and rotates end, and described cylinder outer ring has a radially circular arc projection at least; The radially circular arc projection of described external tooth tumbler (4) and the ring gear tooth engagement of described internal tooth keeper (3); The rotation axis of described knob (1) is threaded with locking nut through the through hole of internal tooth keeper (3) and the through hole of external tooth tumbler (4), and the rotation axis of described knob (1) cooperates with the through hole of internal tooth keeper (3) and the via clearance of external tooth tumbler (4).

2, rotation accurate positioning device according to claim 1 is characterized in that: described support comprises stake body (2), and this stake body (2) has a groove, and the through hole of described internal tooth keeper (3) penetrates stake body (2); The one axially extended boss of through hole along this internal tooth keeper (3) is arranged on the face of described internal tooth keeper (3); Described internal tooth keeper (3) and described stake body (2) are by the boss of described internal tooth keeper (3) and being fixed together of described stake body (2) cooperating of groove.

3, rotation accurate positioning device according to claim 1, it is characterized in that: described light fixture rotates end and comprises light fixture rotation seat (5), this light fixture rotation seat (5) has a boss, the through hole of described external tooth tumbler (4) penetrates this boss, axially has two grooves along this through hole on described boss; Described external tooth tumbler (4) inner ring has two radially strip projected parts; Described light fixture rotation seat (5) and described external tooth tumbler (4) are by the groove of described light fixture rotation seat (5) and being fixed together of described external tooth tumbler (4) cooperating of radially strip projected parts.