CN2664348Y

CN2664348Y - Sliding rail intensified structure with three-section ball

Info

Publication number: CN2664348Y
Application number: CN 200320118926
Authority: CN
Inventors: 李国杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-08
Filing date: 2003-12-08
Publication date: 2004-12-15
Anticipated expiration: 2013-12-08

Abstract

The utility model provides a sliding rail intensified structure with three-section ball comprising an outer rail, a middle rail and an inner rail, wherein ball bearings are embedded between the outer rail and the middle rail, and between the middle rail and the inner rail; the upper and lower sides of the middle rail bend inwards with grooves formed on the upper and lower sides of bending segments and connected and matched with the ball bearings; or the inner side or the outer side of the the middle rail is connected with a strengthening rib. According to the force analysis of maximum load of the middle rail and based on the principle that the shearing stress of the materials bearing is in direct proportion to the area of a cross section of the middle rail, the utility model increases the bearing capacity by increasing the area of the cross section of the middle rail. The utility model has a reasonable structure, obviously increased capacities of bearing and fatigue resistance, greatly prolonged service life, wide application in various places where three-section sliding rail is used, wide adaptation scope, promising market prospect.

Description

The full exhibition of three joints ball slide rail reinforced structure

Technical field

The utility model relates to the slide rail technology, the full exhibition of particularly a kind of three joints ball slide rail reinforced structure.

Background technology

It is longer that the full exhibition of three joints ball slide rail generally is applied to sliding distance, carry bigger occasion, by outer rail, middle rail, the chimeric formation of interior rail socket, rabbet between rail and the interior rail between outer rail and middle rail and in reaching ball is arranged, outer rail, middle rail, interior rail is separated by ball and can be slided mutually under its rolling action, the cross-sectional structure of the full exhibition of existing three joints ball slide rail as shown in Figure 1, as seen from Figure 1, the middle rail 2 that is connected with the contact of both sides ball is single layer structure simultaneously, only be the layer of material carrying, save the middle just rail 2 of the maximum assembly of full exhibition ball slide rail carrying according to mechanical analysis this as can be known three, thereby the bearing capacity of centering rail 2 has proposed higher requirement, again because the bearing capacity of middle rail 2 is directly proportional with its cross-sectional area, so the middle rail of this single layer structure is because cross-sectional area is less, so bearing capacity is lower, cause the rated load of the full exhibition of whole three joints ball slide rail also less, can not satisfy the demand and bear the instructions for use of big load occasion (as the transmission of electricity cabinet), certain limitation is arranged in actual applications.

Summary of the invention

The purpose of this utility model is to overcome the shortcoming of prior art, provide a kind of rational in infrastructure, bearing capacity is big, can be applicable to bear the full exhibition of the three joints ball slide rail reinforced structure of big load occasion.

The purpose of this utility model is achieved through the following technical solutions: the full exhibition of this three joint ball slide rail reinforced structure comprises outer rail, middle rail, interior rail, between outer rail and middle rail and and in rabbet between rail and the interior rail ball arranged, it is characterized in that: the upper and lower side direction inner bending of described middle rail also forms groove and ball is connected simultaneously in the upper and lower side of bending segment.

The groove that described upper and lower side forms simultaneously can be positioned on the same vertical plane, also can stagger mutually at vertical direction.

The upper and lower lateral buckling of rail part can fit together fully with bending part not in described, also can only be that local the applying contacts.

Also can be in the inboard of the middle rail of the full exhibition of existing three joints ball slide rail with the similar scheme of above-mentioned technical pattern or the mode of the outsides by welding is connected with stiffener, described stiffener and middle rail weld applying wholly or in part; Described stiffener is equivalent to the described bending segment part of aforementioned structure, and both architectural features are similar with reaching role, should be within the protection range of the technical program.

The utility model has following advantage and effect with respect to prior art: the force analysis of rail load maximum in this reinforced structure basis, bond material bears the action principle that shear stress is directly proportional with its cross-sectional area size, adopt the mode that rail bearing carries cross-sectional area in the increase, improve its bearing capacity, thereby structure is more reasonable, and its bearing load value obviously increases (the experiment proved that than existing structural bearing amount and improve 40～50%), anti-fatigue ability significantly improves, prolong useful life greatly, can be widely used in the occasion of various use three joint slide rails, the scope of application is wider, good market prospect.

Description of drawings

Fig. 1 is the structural representation of the full exhibition of existing three joints ball slide rail.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is a stereogram of using the full exhibition of the three joints ball slide rail of structure shown in Figure 2.

Fig. 4 is the end view of the full exhibition of three joints shown in Figure 3 ball slide rail.

Fig. 5 is the schematic diagram of another structure of the utility model.

Embodiment

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but of the present utility model

Execution mode is not limited thereto.

Embodiment 1

Fig. 2～Fig. 4 shows concrete structure of the present utility model, as seen from Figure 3, the full exhibition of the three joints ball slide rail of using this structure comprises outer rail 1, middle rail 2, interior rail 3, rabbet between rail 2 and the interior rail 3 between outer rail 1 and middle rail 2 and in reaching ball 4 is arranged, the concrete shape of each member and annexation are as shown in Figure 2, as seen from Figure 2, on the middle rail 2, downside bends inwards and on bending segment, downside forms groove 2-1 simultaneously, 2-2 and ball are connected, described groove 2-1,2-2 is positioned on the same vertical plane, on the middle rail 2, the groove 2-1 that downside bending part 2-3 and bending part 2-4 not form, the 2-2 tangent contact in bottom; End view shown in Figure 4 as seen, the upper and lower bending segment 2-5 that is provided with carries out spacing to ball in the end of middle rail.

Embodiment 2

Fig. 5 shows another kind of structure of the present utility model, as seen from Figure 5, the full exhibition of this three joint ball slide rail structure except that following characteristics with embodiment 1: the inboard of middle rail is connected with stiffener 5 by the mode of welding, described stiffener 5 and middle rail 2 parts welding applying.

Claims

1, the full exhibition of a kind of three joints ball slide rail reinforced structure, comprise outer rail, middle rail, interior rail, between outer rail and middle rail and and between rail and the interior rail interlocking ball is arranged, it is characterized in that: the upper and lower side direction inner bending of described middle rail also is connected at the upper and lower side formation groove and the ball of bending segment.

2, according to the full exhibition of described three joints of claim 1 ball slide rail reinforced structure, it is characterized in that: the groove that described upper and lower side forms is positioned on the same vertical plane.

3, according to the full exhibition of described three joints of claim 1 ball slide rail reinforced structure, it is characterized in that: the groove that described upper and lower side forms staggers mutually at vertical direction.

4, according to the full exhibition of described three joints of claim 1 ball slide rail reinforced structure, it is characterized in that: the upper and lower lateral buckling part of rail fits together fully with bending part not in described.

5, according to the full exhibition of described three joints of claim 1 ball slide rail reinforced structure, it is characterized in that: the upper and lower lateral buckling part of rail contacts with local applying of bending part not in described.

6, the full exhibition of a kind of three joints ball slide rail reinforced structure comprises outer rail, middle rail, interior rail, and rabbeting between rail and the interior rail between outer rail and middle rail and in reaching has ball, and it is characterized in that: the inboard of rail or the outside are connected with stiffener by the mode of welding in described.

7, according to the full exhibition of described three joints of claim 6 ball slide rail reinforced structure, it is characterized in that: the complete or local welding applying of described stiffener and middle rail.