Detachable guide wheel structure capable of automatically stretching out and drawing back stably

Abstract

The utility model relates to the technical field of sliding door guide wheels, in particular to a detachable automatic telescopic stable guide wheel structure which comprises a fixed base, a main guide wheel fixed base fixed on the fixed base and an auxiliary guide wheel fixed base connected to the main guide wheel fixed base in a sliding mode. A spring is connected between the main guide wheel fixing base and the auxiliary guide wheel fixing base; the main guide wheel fixing base and the auxiliary guide wheel fixing base are both connected with guide wheels. When the sliding door is used, the auxiliary guide wheel fixing base is pushed by the spring to automatically stretch and slide at the narrowing or widening position of the door frame, so that the guide wheels on the two sides can be tightly pressed on the inner side wall of the door frame all the time for positioning, smooth sliding of the sliding door can be guaranteed, and sliding of the door is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of sliding door guide wheels, and particularly relates to a detachable, automatically telescopic and stable guide wheel structure. Background Art

[0002] A sliding door refers to a door whose door leaf is connected with pulleys and can move on a fixed track, also known as a sliding door. In order to ensure the smooth sliding of the sliding door on the guide rail, a guide wheel structure is provided on the ground. By the wheel body of the guide wheel pressing tightly against the left and right inner side walls of the sliding door frame, the sliding of the sliding door is made smooth. However, in the existing guide wheel mechanism, the guide wheel is a fixed structure on the guide wheel seat, and the distance between the guide wheels is a set value. However, due to the easy occurrence of micro-deformation of the door frame during production and transportation, at some widened positions, the guide wheel cannot tightly fit inside the door frame, resulting in slight shaking during the sliding of the sliding door. At some narrowed positions, the resistance increases and the sliding is not smooth. Content of the Utility Model

[0003] The purpose of the utility model is to provide a detachable, automatically telescopic and stable guide wheel structure aiming at the defects and deficiencies of the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The detachable, automatically telescopic and stable guide wheel structure of the utility model includes a fixed base, a main guide wheel fixed base fixed on the fixed base, and a secondary guide wheel fixed base slidably connected to the main guide wheel fixed base; a spring is connected between the main guide wheel fixed base and the secondary guide wheel fixed base; guide wheels are connected to both the main guide wheel fixed base and the secondary guide wheel fixed base.

[0006] Further, at least two countersunk holes are provided on the fixed base.

[0007] Further, a sliding groove is provided on the secondary guide wheel fixed base; a pin fixedly connected to the sliding groove is fixed on the main guide wheel fixed base.

[0008] Further, the pin is a headed pin.

[0009] Further, a through pin hole is provided on the main guide wheel fixed base; a locking threaded hole is provided on the fixed base; an external thread is provided on the headed pin; the pin sequentially passes through the through pin hole and the sliding groove and is threadedly connected to the locking threaded hole.

[0010] Further, inserting strips are provided on both sides of the main guide wheel fixing base; positioning grooves matching the inserting strips are provided on the left and right sides of the fixing base; the inserting strips on both sides are respectively inserted into the positioning grooves on both sides; one end of the sub-guide wheel fixing base with a sliding groove is inserted between the two inserting strips.

[0011] Further, a spring positioning shaft is provided on the sub-guide wheel fixing base; the spring is sleeved outside the spring positioning shaft; the end of the spring abuts against the main guide wheel fixing base.

[0012] Further, a wheel seat is rotatably connected to the guide wheel; the wheel seat is a threaded rod; a first threaded hole is provided on the sub-guide wheel fixing base; a second threaded hole is provided on the main guide wheel fixing base; the threaded rods of the two guide wheels are respectively threadedly connected in the first threaded hole and the second threaded hole.

[0013] Further, the guide wheel is a bearing.

[0014] Further, the main guide wheel fixing base is detachably connected to the fixing base; slots are provided on both sides of the bottom of the fixing base; two inserting strips are provided at the bottom of the main guide wheel fixing base; the inserting strips match the slots; the two inserting strips are respectively inserted into the slots; a third threaded hole is provided in the slot; an inserting strip counterbore is provided on the inserting strip; the main guide wheel fixing base is locked and fixed on the fixing base by passing a headed screw through the inserting strip counterbore and then threadedly connecting it to the third threaded hole.

[0015] After adopting the above structure, the beneficial effects of the present utility model are as follows: for the detachable, automatically telescopic and stable guide wheel structure described in the present utility model, when the present utility model is used, the entire guide wheel structure is connected and fixed to the ground; the two guide wheels respectively abut against the left and right inner side walls of the sliding door frame; since the sub-guide wheel fixing base can slide relative to the main guide wheel fixing base, and a spring is connected between the two, the guide wheel body on the sub-guide wheel fixing base is elastically pressed against one inner side wall of the door frame; at the position when the door frame becomes narrower or wider, the sub-guide wheel fixing base is automatically telescopically slid by the spring, so that the guide wheels on both sides can always be tightly pressed against the inner side wall of the door frame for positioning, ensuring smooth sliding of the sliding door and more stable sliding of the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a sectional view of the present utility model;

[0018] Figure 3 is an exploded view of the present utility model;

[0019] Figure 4 It is a structural diagram of a guide wheel;

[0020] Figure 5 It is a structural diagram of a fixed base for a secondary guide wheel;

[0021] Figure 6 It is a structural diagram of a fixed base for a main guide wheel;

[0022] Figure 7 It is a structural diagram of a fixed base;

[0023] Figure 8 It is a structural diagram of the detachable connection between the fixed base and the fixed base of the main guide wheel in the present utility model;

[0024] Figure 9 It is an exploded view of the detachable connection between the fixed base and the fixed base of the main guide wheel in the present utility model;

[0025] Explanation of reference numerals:

[0026] 1, guide wheel; 101, wheel seat; 2, fixed base for secondary guide wheel; 201, first threaded hole;

[0027] 202, spring positioning shaft; 203, sliding groove; 3, pin; 4, spring;

[0028] 5, fixed base for main guide wheel; 501, baffle; 502, second threaded hole; 503, through pin hole;

[0029] 504, insert bar; 504a, counterbore for insert bar; 6, fixed base; 601, counterbore;

[0030] 602, locking threaded hole; 603, positioning groove; 604, slot; 604a, third threaded hole;

[0031] 7, self-tapping screw; 8, wall plug; 9, headed screw. Detailed implementation mode

[0032] The present utility model will be further described below with reference to the accompanying drawings.

[0033] As Figures 1 to 9 shown, a detachable, automatic telescopic and stable guide wheel structure according to the present utility model includes a fixed base 6, a fixed base 5 for a main guide wheel fixed on the fixed base 6, and a fixed base 2 for a secondary guide wheel slidably connected to the fixed base 5 for the main guide wheel; a spring 4 is connected between the fixed base 5 for the main guide wheel and the fixed base 2 for the secondary guide wheel; guide wheels 1 are connected to both the fixed base 5 for the main guide wheel and the fixed base 2 for the secondary guide wheel;

[0034] The entire guide wheel structure is fixedly connected to the ground; the two guide wheels 1 are respectively pressed against the left and right inner side walls of the sliding door frame; since the auxiliary guide wheel fixing base 2 can slide relative to the main guide wheel fixing base 5 and a spring 4 is connected between the two, the body of the guide wheel 1 on the auxiliary guide wheel fixing base 2 is elastically pressed against one inner side wall of the door frame; at the position when the door frame becomes narrower or wider, the auxiliary guide wheel fixing base 2 is automatically telescoped and slid by the spring 4, so that the guide wheels 1 on both sides can always be tightly pressed against the inner side wall of the door frame for positioning, which can ensure the smooth sliding of the sliding door and make the sliding of the door more stable.

[0035] As a preferred embodiment of the present invention, at least two countersunk holes 601 are provided on the fixing base 6; after drilling a hole in the ground and inserting the wall plug 8, the fixing base 6 is fixed to the ground by passing the self-tapping screw 7 through the countersunk hole 601 and connecting it to the wall plug 8; the head of the self-tapping screw 7 is hidden in the countersunk hole 601.

[0036] As a preferred embodiment of the present invention, a sliding groove 203 is provided on the auxiliary guide wheel fixing base 2; a pin 3 slidably connected to the sliding groove 203 is fixed on the main guide wheel fixing base 5;

[0037] The pin 3 is inserted into the sliding groove 203 to limit the auxiliary guide wheel fixing base 2 on the main guide wheel fixing base 5, so that the auxiliary guide wheel fixing base 2 cannot be separated from the main guide wheel fixing base 5.

[0038] As a preferred embodiment of the present invention, the pin 3 is a headed pin; the head of the headed pin is stuck on both sides of the surface of the sliding groove 203 to prevent the auxiliary guide wheel fixing base 2 from jumping on the main guide wheel fixing base 5.

[0039] As a preferred embodiment of the present invention, a pin hole 503 is provided on the main guide wheel fixing base 5; a locking threaded hole 602 is provided on the fixing base 6; an external thread is provided on the headed pin; the pin 3 passes through the pin hole 503 and the sliding groove 203 in sequence and is threadedly connected to the locking threaded hole 602; in addition to being used for the sliding guide of the auxiliary guide wheel fixing base 2, the pin 3 is also used for the connection and fixation of the main guide wheel fixing base 5 and the fixing base 6, which simplifies the connection structure of the guide wheel structure and makes the guide wheel structure a detachable structure.

[0040] As a preferred embodiment of the present invention, insertion strips 501 are provided on both sides of the main guide wheel fixing base 5; positioning grooves 603 matching the insertion strips 501 are provided on the left and right sides of the fixing base 6; the insertion strips 501 on both sides are respectively inserted into the positioning grooves 603 on both sides; one end of the auxiliary guide wheel fixing base 2 with the sliding groove 203 is inserted between the two insertion strips 501;

[0041] The gap formed between the two inserts 501 is equal to the width of one end of the auxiliary guide wheel fixing base 2 extending into this gap;

[0042] In addition to positioning the main guide wheel fixing base 5 on the fixing base 6, the insert 501 can also be used to limit the position of the auxiliary guide wheel fixing base 2 to prevent the auxiliary guide wheel fixing base 2 from swinging during the sliding process.

[0043] As a preferred embodiment of the present utility model, a spring positioning shaft 202 is provided on the auxiliary guide wheel fixing base 2; the spring 4 is sleeved outside the spring positioning shaft 202; the end of the spring 4 abuts against the main guide wheel fixing base 5;

[0044] The spring 4 adopts a sleeved connection structure, which is convenient for disassembly and assembly.

[0045] As a preferred embodiment of the present utility model, a wheel seat 101 is rotatably connected to the guide wheel 1; the wheel seat 101 is a threaded rod; a first threaded hole 201 is provided on the auxiliary guide wheel fixing base 2; a second threaded hole 502 is provided on the main guide wheel fixing base 5; the threaded rods of the two guide wheels 1 are respectively threadedly connected in the first threaded hole 201 and the second threaded hole 502; the auxiliary guide wheel fixing base 2 and the main guide wheel fixing base 5 of the guide wheel 1 are connected to the guide wheel 1 by a threaded connection method, which is convenient for replacing the guide wheel 1.

[0046] As a preferred embodiment of the present utility model, the guide wheel 1 is a bearing.

[0047] As Figure 8 and 9 shown, as a preferred embodiment of the present utility model, the main guide wheel fixing base 5 is detachably connected to the fixing base; slots 604 are provided on both sides of the bottom of the fixing base 6; two inserts 504 are provided on the bottom of the main guide wheel fixing base 5; the inserts 504 are inserts 504 matching the slots 604; the two inserts 504 are respectively inserted into the slots 604; a third threaded hole 604a is provided in the slot 604; an insert countersunk hole 504a is provided on the insert 504; the main guide wheel fixing base 5 is locked and fixed on the fixing base 6 by passing a button head screw 9 through the insert countersunk hole 504a and then threadedly connecting it to the third threaded hole 604a; the button head screw 9 is an internal hexagonal socket countersunk head screw; by loosening and tightening the internal hexagonal socket countersunk head screw, the detachable connection between the main guide wheel fixing base 5 and the fixing base 6 can be realized.

[0048] The above is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present utility model are included in the scope of the patent application of the present utility model.

Claims

1. A detachable, automatically retractable and stable guide wheel structure, characterized in that: It comprises a fixed base (6), a main guide wheel fixed base (5) fixed on the fixed base (6), and a secondary guide wheel fixed base (2) slidably connected to the main guide wheel fixed base (5); a spring (4) is connected between the main guide wheel fixed base (5) and the secondary guide wheel fixed base (2); and guide wheels (1) are connected to both the main guide wheel fixed base (5) and the secondary guide wheel fixed base (2).

2. The detachable, automatically retractable and stable guide wheel structure according to claim 1, characterized in that: At least two countersunk holes (601) are provided on the fixed base (6).

3. The detachable, automatically retractable and stable guide wheel structure according to claim 1, characterized in that: The auxiliary guide wheel fixing base (2) is provided with a sliding groove (203); and the main guide wheel fixing base (5) is fixed with a pin (3) which is slidably connected to the sliding groove (203).

4. The detachable, automatically retractable and stable guide wheel structure according to claim 3, characterized in that: The pin (3) is a headed pin.

5. The detachable, automatically retractable and stable guide wheel structure according to claim 4, characterized in that: The main guide wheel fixing base (5) is provided with a pin hole (503); the fixing base (6) is provided with a locking threaded hole (602); the headed pin is provided with an external thread; the pin (3) passes through the pin hole (503) sliding groove (203) in sequence and is then threadedly connected to the locking threaded hole (602).

6. The detachable, automatically retractable and stable guide wheel structure according to claim 5, characterized in that: Insertion strips (501) are provided on both sides of the main guide wheel fixed base (5); positioning grooves (603) matching the insertion strips (501) are provided on both left and right sides of the fixed base (6); the insertion strips (501) on both sides are respectively inserted into the positioning grooves (603) on both sides; and one end of the auxiliary guide wheel fixed base (2) with the sliding groove (203) is inserted between the two insertion strips (501).

7. The detachable, automatically retractable and stable guide wheel structure according to claim 1, characterized in that: A spring positioning shaft (202) is provided on the auxiliary guide wheel fixing base (2); the spring (4) is inserted outside the spring positioning shaft (202); and the end of the spring (4) is pressed against the main guide wheel fixing base (5).

8. The detachable, automatically retractable and stable guide wheel structure according to claim 1, characterized in that: The guide wheel (1) is rotatably connected to a wheel seat (101); the wheel seat (101) is a threaded rod; the auxiliary guide wheel fixing base (2) is provided with a first threaded hole (201); the main guide wheel fixing base (5) is provided with a second threaded hole (502); the threaded rods of the two guide wheels (1) are respectively threadedly connected to the first threaded hole (201) and the second threaded hole (502).

9. The detachable, automatically retractable and stable guide wheel structure according to claim 1, characterized in that: The guide wheel (1) is a bearing.

10. The detachable, automatically retractable and stable guide wheel structure according to claim 1, characterized in that: The main guide wheel fixing base (5) is detachably connected to the fixing base; slots (604) are provided on both sides of the bottom of the fixing base (6); two inserting strips (504) are provided at the bottom of the main guide wheel fixing base (5); the inserting strips (504) match the slots (604); the two inserting strips (504) are respectively inserted into the slots (604); a third threaded hole (604a) is provided in the slot (604); an inserting strip countersunk hole (504a) is provided on the inserting strip (504); the main guide wheel fixing base (5) is locked and fixed to the fixing base (6) after a head screw (9) passes through the inserting strip countersunk hole (504a) and is threadedly connected to the third threaded hole (604a).

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