Track structure of heavy sliding door

Abstract

The utility model discloses a heavy sliding door track structure which is characterized in that a convex rail is arranged at the bottom of an outer frame, a longitudinal idler wheel connected with the convex rail in a sliding mode is arranged at the bottom of a sash frame, and a transverse guide mechanism connected with the two sides of the top of the outer frame is arranged at the top of the sash frame. The transverse guide mechanism and the longitudinal idler wheels enable the fan frame and the outer frame to form a three-point type supporting structure on the plane. Two-point type contact is achieved through the guide mechanism, the two sides of the top of the fan frame can still keep tight contact after the fan frame is used for a long time, the two-point type structure of the top is used for preventing the upper portion from shaking, and the whole system keeps stable.

Description

Technical Field

[0001] The utility model relates to the field of building doors and windows, and particularly to a track structure for a heavy sliding door. Background Art

[0002] Figure 1 A conventional sliding door track is shown. This track structure includes rollers 11 arranged on the upper and lower parts of the fan frame 10 and a convex rail 21 arranged on the outer frame 20. The fan frame 10 and the outer frame 20 are in two-point contact through the rollers 11 and the convex rail 21, that is, from the cross-sectional view, the fan frame 10 has one connection point at the top and bottom respectively. Considering that a lateral force (in the cross-sectional direction) will be applied to the sliding door when manually operating the sliding door, and if the self-weight and size of the sliding door are relatively large, the rollers 11 will cause the fan frame 10, especially the top position, to shake during movement due to wear after long-term use. Content of the Utility Model

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a track structure for a heavy sliding door to achieve the purpose of overcoming the shaking of the fan frame caused by roller loss.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A track structure for a heavy sliding door, a convex rail is arranged at the bottom of the outer frame, a longitudinal roller slidably connected to the convex rail is arranged at the bottom of the fan frame, and a lateral guiding mechanism connected to both sides of the top of the outer frame is arranged at the top of the fan frame. The lateral guiding mechanism and the longitudinal roller form a three-point support structure between the fan frame and the outer frame on a plane.

[0006] In a preferred embodiment of the utility model, a plurality of guide wheels extending upward and contacting the outer frame are arranged in pairs on the base of the guiding mechanism, and the guide wheels enable at least two contact points to be simultaneously provided between the top of the fan frame and the outer frame.

[0007] In a preferred embodiment of the utility model, a bearing enabling the guide wheel to rotate around a fixed axis is arranged inside the guide wheel.

[0008] In a preferred embodiment of the utility model, a positioning hole is opened at the top of the outer frame, and the guiding mechanism is fixed in a horizontal direction by a positioning pin vertically passing through and inserted into the positioning hole.

[0009] In a preferred embodiment of the utility model, a chute is further arranged at the top of the outer frame, and a convex tongue extending relatively and enabling the base to slide on the outer frame is arranged at the bottom of the base.

[0010] In a preferred embodiment of the present utility model, a perforation with internal threads is further provided on the positioning pin, and an adjusting screw engages with the perforation from the side to achieve vertical fixation of the positioning pin.

[0011] In a preferred embodiment of the present utility model, a limit pin for restricting the engagement depth of the adjusting screw is further arranged on the side of the positioning pin.

[0012] In a preferred embodiment of the present utility model, the positioning pin is arranged on a hollow boss.

[0013] The beneficial effects of the present utility model are as follows:

[0014] The heavy sliding door track structure provided by the present utility model realizes two-point contact through the guiding mechanism, enabling the two sides at the top to still maintain close contact after long-term use of the fan frame, preventing the upper part from shaking by using the two-point structure at the top, and keeping the entire system stable. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0016] Figure 1 It is a schematic diagram of the prior art.

[0017] Figure 2 It is a structural and assembly schematic diagram of the guiding mechanism of the present utility model.

[0018] Figure 3 It is a structural sectional view of the fan frame and the appearance of the present utility model. Detailed Embodiments

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. The above description is for the convenience of describing the present utility model and simplifies the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0020] The singular forms "a", "the", and "said" used in the specification, unless clearly specified otherwise, include the plural forms. The terms "including", "comprising", and "containing" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the related listed items.

[0021] In the specification, when it is stated that one element is "on", "fixed" to, "connected" to, "joined" to another element, etc., the element can be directly on, fixed to, connected to, joined to or in contact with the other element, or there may be intermediate elements.

[0022] Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. However, it should be understood that the present application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all the drawings, the same reference numerals represent the same or functionally identical elements.

[0023] Figure 2 A guiding mechanism provided at the top of the fan frame is shown. The mechanism includes a number of pairs of guide wheels 34 provided on its surface and protruding upward. The guide wheels 34 can rotate about their fixed shafts for connecting the base 31, and thus when the upper part of the fan frame 10 is in contact with the outer frame 20, they directly contact the outer frame 20 as friction rolling members. The paired arrangement of the guide wheels 34 enables both sides (in the cross-sectional direction) of the fan frame 10 to be supported by the guide wheels 34, so as to maintain stability and smoothness during the movement.

[0024] The bottom of the guiding mechanism 30 has a pair of tongues 32 protruding opposite to each other. Correspondingly, on the top of the outer frame 20, on the parallel side wall surfaces, there are chutes 13 extending along the long side direction thereof. By inserting the tongues 32 into the chutes, the base 31 of the guiding mechanism 30 is limited to move on the top of the fan frame 10. A through hole 36 is also provided on the base. A positioning pin 37 with a perforation 37b on the rod 37a is inserted into the through hole 36 from above. A positioning hole 12 is provided between the chutes 13 on the top of the fan frame 10. The positioning pin 37 passes through the through hole 36 and is inserted into the positioning hole 12 to limit the sliding direction of the base 31 (i.e., the extending direction of the chute 13). Further, the perforation 37b has internal threads. After the positioning pin 37 is arranged in place, an adjusting screw 38 is inserted from the side into the base 31 and engaged with the perforation 37b to vertically fix it. On the other hand, a limit pin 35 can also be provided on one side of the through hole 36. Its function is to limit the screwing depth of the adjusting screw 38 when it is screwed into the perforation 37b to facilitate operation by personnel.

[0025] In one embodiment, the base 31 has a hollow convex structure, and the limit pin 35, the through hole 36 and the positioning pin 37 are provided on the upper part of the hollow structure.

[0026] Combined reference Figure 3, the guide wheel 34 has bearing balls 34a inside, so it can rotate. The bottom of the fan frame 10 still chooses to be engaged with the guide rail structure combined with the convex rail 21 through the rollers 11. This single-point contact structure ensures the stability of the bottom of the fan frame 10. Its top realizes two-point contact through the guiding mechanism 30, so that both sides of the top of the fan frame 10 can still maintain close contact after long-term use. The two-point structure at the top is used to prevent the upper part from shaking, so as to keep the whole system stable.

Claims

1. A heavy sliding door track structure, characterized in that, A convex rail is provided at the bottom of the outer frame, a longitudinal roller slidably connected to the convex rail is provided at the bottom of the fan frame, and a lateral guiding mechanism connected to both sides of the top of the outer frame is provided at the top of the fan frame. The lateral guiding mechanism and the longitudinal roller form a three-point support structure between the fan frame and the outer frame on a plane.

2. The heavy sliding door track structure according to claim 1, characterized in that, A number of guide wheels extending upward and contacting the outer frame are arranged in pairs on the base of the guiding mechanism. The guide wheels enable at least two contact points to be simultaneously provided between the top of the fan frame and the outer frame.

3. A heavy sliding door track structure according to claim 2, characterized in that, A bearing enabling the guide wheel to rotate around a fixed axis is provided inside the guide wheel.

4. The heavy sliding door track structure according to claim 2, characterized in that, A positioning hole is formed at the top of the outer frame, and the guiding mechanism is fixed in a horizontal direction by a positioning pin vertically passing through and inserted into the positioning hole.

5. The heavy sliding door track structure according to claim 2, wherein, A chute is further provided at the top of the outer frame, and a convex tongue relatively extending from the bottom of the base and enabling the base to slide on the outer frame is provided.

6. The heavy sliding door track structure according to claim 4, characterized in that A perforation with an internal thread is further formed on the positioning pin, and an adjusting screw engages with the perforation from the side to achieve the vertical fixation of the positioning pin.

7. A heavy sliding door track structure according to claim 6, characterized in that, A limit pin for limiting the meshing depth of the adjusting screw is further arranged on the side of the positioning pin.

8. A heavy sliding door track structure according to any one of claims 4, 6, and 7, characterized in that, The positioning pin is arranged on a hollow convex platform.

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