CN210081528U

CN210081528U - Locking device

Info

Publication number: CN210081528U
Application number: CN201822043390.7U
Authority: CN
Inventors: 王刘傲; 苏治德
Original assignee: Individual
Current assignee: Guangxi Lituo Intelligent Technology Co ltd
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2020-02-18
Anticipated expiration: 2028-12-06

Abstract

The utility model discloses a locking device, including locking end with by the locking end, the locking end is offered the shaft hole that is used for inserting the dabber, the outer wall of locking end is seted up a plurality of and is linked up to the through-hole in shaft hole, sets up the spheroid in the through-hole one by one, the outer wall of dabber is provided with the reducing section that one section radius grow gradually, is offered the trepanning that is used for inserting the locking end by the locking end, the inner wall of trepanning is offered and is used for blocking spheroidal draw-in groove, its characterized in that: every draw-in groove is including being two contact surfaces of symmetry setting, and when the spheroid was extruded on the draw-in groove by the reducing section, two contact surfaces all supported corresponding spheroid. Two stress areas forming an angle with the axis can be formed between each sphere and each clamping groove by using two symmetrical contact surfaces, so that the whole locking device can bear axial tension and torque at the same time, the stress condition is improved, and the positioning rigidity is improved.

Description

Locking device

Technical Field

The utility model relates to a locking device.

Background

The sphere locking device is composed of a locking end which carries a sphere as a force transmission object and a locked end which bears locking force and load. The locking end is internally provided with a mandrel or a structure with the same action pushed by the elastic potential energy of a spring or the pressure of a fluid medium, so that the spheres distributed around the shell are ejected or retracted; the locked end can be various structures with a sphere positioning groove. When the two are combined, the ball body is ejected out of the extrusion positioning groove by the core rod, and continuous locking force is provided for the two ends. The positioning groove at the locked end mainly has two forms of an annular groove and a pit groove. The fluid connector and the quick positioning pin are axially locked by the annular groove, and bear axial tension, and the annular groove has low manufacturing cost and no anti-torsion capability. The pit groove has the axial locking and certain twisting and positioning capabilities.

The existing locked end pit slot is designed into a spherical slot to fit the spherical surface of a sphere, the spherical slot is slightly larger than the diameter of the sphere during manufacturing, the contact with the sphere is local single-point contact, the contact stress is large and concentrated, the axial tension can be borne, but the positioning precision of axial rotation is poor; dirt accumulated in the groove is not easy to discharge, the locking effect is influenced, and the condition of local abrasion is easy to cause after long-term use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design is reasonable, locking device.

The utility model provides a technical scheme that above-mentioned problem adopted is:

the utility model provides a locking device, includes the locking end and is held by the locking, and the locking end is offered the shaft hole that is used for inserting the dabber, and a plurality of intercommunication is seted up to the outer wall of locking end to the through-hole in shaft hole, sets up the spheroid in the through-hole one by one, and the outer wall of dabber is provided with the reducing section of one section radius grow gradually, offers the trepanning that is used for inserting the locking end by the locking end, and the inner wall of trepanning is offered and is used for blocking spheroidal draw-in: every draw-in groove is including being two contact surfaces of symmetry setting, and when the spheroid was extruded on the draw-in groove by the reducing section, two contact surfaces all supported corresponding spheroid.

When the mandrel slides relative to the shaft hole, the ball body is outwards extruded through the outer wall of the reducing section, the ball body is ejected out along the radial direction and is propped against two contact surfaces, the ball body and each clamping groove form double-point contact, and the single-point contact with the spherical pit angle being zero has lower stress and can bear axial torque.

Preferably, a groove is provided between the two contact surfaces of each card slot. The groove can be used as an overtravel groove when a product is processed, and dirt can be discharged through the groove under the extrusion of the ball when the product is used.

Preferably, the variable diameter section is in a circular truncated cone shape.

Preferably, flanges are fixed to the locking end and the locked end.

Preferably, one end of the contact surface tapers inwardly (i.e., radially inwardly of the trepan bore). By adopting the structure, after the ball body is clamped into the clamping groove, the contact surface can limit the locked end to be separated from the locking end along the axial line in one way.

Compared with the prior art, the utility model, have following advantage and effect: two stress areas forming an angle with the axis can be formed between each sphere and each clamping groove by using two symmetrical contact surfaces, so that the whole locking device can bear axial tension and torque at the same time, the stress condition is improved, and the positioning rigidity is improved.

Drawings

Fig. 1 is a schematic perspective view of a locking device according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional structural view of a locking device according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a locking end according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a mandrel according to an embodiment of the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of a locking device according to an embodiment of the present invention.

Fig. 7 is an enlarged schematic structural diagram of a place a in fig. 6 according to the embodiment of the present invention.

Fig. 8 is a schematic sectional view of the embodiment of the present invention with a locked end.

Fig. 9 is an enlarged schematic structural diagram of the embodiment of the present invention at B in fig. 8.

Numbering in the figures: locking end 1, locked end 2, mandrel 3, ball 4, shaft hole 11, through hole 12, reducing section 31, trepanning 21, clamping groove 22, contact surface 221, groove 222 and flange 5

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

Referring to fig. 1-8, this embodiment locking device, including the locking end with by the locking end, the locking end is offered the shaft hole that is used for inserting the dabber, the outer wall of locking end is offered a plurality of and is linked to the through-hole in shaft hole, sets up the spheroid in the through-hole one by one, the outer wall of dabber is provided with the reducing section of one section radius grow gradually, the reducing section is the round platform shape. The trepanning that is used for inserting the locking end is offered by the locking end, and the inner wall of trepanning is offered and is used for blocking spheroidal draw-in groove, and every draw-in groove is including being two contact surfaces that the symmetry set up, the one end of contact surface leans on the adduction gradually to be drawn together, and when the spheroid was extruded on the draw-in groove by the reducing section, two contact surfaces all supported corresponding spheroid. The locking end and the locked end are both fixed with flanges.

As shown in fig. 8, a groove is provided between the two contact surfaces of each card slot. The groove can be used as an overtravel groove when a product is processed, and dirt can be discharged through the groove under the extrusion of the ball when the product is used.

When the mandrel slides relative to the shaft hole, the ball body is extruded outwards through the outer wall of the reducing section. As shown in fig. 7, the ball is ejected out in the radial direction and abuts against two contact surfaces, and the ball forms a double-point contact with each slot, which has lower stress than a single-point contact with a spherical pit angle of zero and can bear axial torque. Two stress areas forming an angle with the axis can be formed between each sphere and each clamping groove by using two symmetrical contact surfaces, so that the whole locking device can bear axial tension and torque at the same time, the stress condition is improved, and the positioning rigidity is improved.

The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a locking device, includes the locking end and is held by the locking, and the locking end is offered the shaft hole that is used for inserting the dabber, and a plurality of intercommunication is seted up to the outer wall of locking end to the through-hole in shaft hole, sets up the spheroid in the through-hole one by one, and the outer wall of dabber is provided with the reducing section of one section radius grow gradually, offers the trepanning that is used for inserting the locking end by the locking end, and the inner wall of trepanning is offered and is used for blocking spheroidal draw-in: every draw-in groove is including being two contact surfaces of symmetry setting, and when the spheroid was extruded on the draw-in groove by the reducing section, two contact surfaces all supported corresponding spheroid.

2. The locking device of claim 1, wherein: a groove is arranged between the two contact surfaces of each clamping groove.

3. The locking device of claim 1, wherein: the reducing section is in a circular truncated cone shape.

4. The locking device of claim 1, wherein: the locking end and the locked end are both fixed with flanges.

5. The locking device of claim 1, wherein: one end of the contact surface is gradually closed inwards.