Conductive trundle with automatic braking function

Abstract

The utility model discloses a conductive caster with an automatic braking function, which comprises a mounting frame, a support and a roller, the mounting frame comprises a positioning plate and a stand column, a braking gasket is fixedly mounted at the bottom of the stand column, wing plates are welded on two outer side walls of the stand column, the support comprises a fixing plate and two side plates, and the fixing plate is fixedly mounted on the side plates. A through hole is formed in the middle of the fixing plate. The utility model relates to the technical field of trundles. According to the conductive trundle with the automatic braking function, an existing clamping braking mode is abandoned, contact friction braking is used as a replacement, the two elastic pieces are matched with the gravity of a user, the brake pad can make contact with the top of the idler wheel, and therefore the braking purpose is achieved, compared with existing clamping braking, the clamping phenomenon is avoided, and meanwhile the service life of the conductive trundle is prolonged. The brake pad is designed above the roller, and the mounting distance between the side plate and the roller is not influenced, so that the mixing of external sundries can be reduced, and the running stability of the roller is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a conductive caster with an automatic braking function. Background Art

[0002] After searching, Chinese patent CN209454464U discloses a conductive caster with automatic braking function, including a shell, and the tops of both sides of the inner cavity of the shell are provided with sliding grooves, the inner cavity of the sliding groove is slidably connected with a slider, the corresponding side of the slider is fixedly connected with a support plate, the two sides of the bottom of the support plate are fixedly connected with a clamping block, the two sides of the bottom of the support plate are welded with a spring, the bottom of the spring is welded to the inner wall of the shell through a connecting block, the bottoms of both sides of the inner cavity of the shell are fixedly connected with a first bearing seat, the corresponding side of the first bearing seat is movably connected with a rotating rod, and both sides of the surface of the rotating rod are provided with prismatic grooves. The utility model achieves the effect of automatic braking through the coordinated use of the sliding groove, the slider, the support plate, the clamping block, the spring and the prismatic groove through the gravity of the office staff, thereby solving the problem that the existing chair casters do not have automatic braking, thereby facilitating the use of the chair.

[0003] As mentioned above, in the use of Chinese patent CN209454464U, the card block and the prismatic card slot are connected by the gravity of the user, so as to achieve the purpose of automatic braking. Specifically, on the one hand, the prismatic card slot can only be connected with the card slot when it is in a docking state with the card slot, and there may be a situation of jamming during use. On the other hand, the design of the card block increases the distance between the shell and the caster, which easily causes the entry of external debris and affects the flexibility of the rotation of the rotating rod. For this reason, the applicant has designed a conductive caster with automatic braking function to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a conductive caster with an automatic braking function, which solves the problem that the Chinese patent CN209454464U may have a jam during use and that external debris may easily enter, affecting the rotation flexibility of the rotating rod.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a conductive caster with automatic braking function, including a mounting frame and a bracket assembled at the bottom of the mounting frame through two elastic members, and a roller mounted in the bracket through an assembly rod.

[0006] The mounting frame includes a positioning plate and a column vertically welded to the bottom of the positioning plate, a brake pad is fixedly installed at the bottom of the column, and wing plates for mounting the top of the elastic member are vertically welded on both outer side walls of the column.

[0007] The bracket includes a fixing plate for mounting the bottom ends of two elastic members and two side plates which are parallel to each other and vertically welded to the bottom of the fixing plate for the assembly rod to pass through and set up. A through hole is opened in the middle of the fixing plate for the column to pass through movably.

[0008] Preferably, the elastic member includes a screw and a nut for limiting one end of the screw and mounting it on the wing plate, and a washer for fixing the head of the screw on the fixing plate, and also includes a return spring sleeved on the outside of the screw, and the two ends of the return spring are respectively pressed against the top of the washer and the bottom of the wing plate.

[0009] Preferably, the tops of the two washers and the bottoms of the two wing plates are provided with limiting grooves for accommodating the ends of the return springs.

[0010] Preferably, it also includes two baffles which are symmetrically distributed and respectively cover the front and rear sides of the top of the roller, and the two baffles are welded to the bracket.

[0011] Beneficial Effects

[0012] The utility model provides a conductive caster with an automatic braking function. Compared with the prior art, it has the following beneficial effects:

[0013] The conductive caster with automatic braking function abandons the current braking method of connecting a block with a prismatic slot and replaces it with contact friction braking. With the help of two elastic parts and the user's own gravity, the brake pad can be brought into contact with the top of the roller, thereby achieving the purpose of braking. Compared with the current card-connected braking, there will be no jamming phenomenon. At the same time, the brake pad is designed to be above the roller and does not affect the installation distance between the side panel and the roller, thereby reducing the mixing of external debris and ensuring the stability of the roller operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the mounting frame of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the bracket of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the elastic member of the utility model;

[0018] In the figure:

[0019] 100. Mounting frame;

[0020] 110, positioning plate; 120, column; 130, brake pad; 140, wing plate;

[0021] 200, elastic member;

[0022] 210, screw rod; 220, nut; 230, washer; 240, return spring;

[0023] 300, bracket;

[0024] 310, fixed plate; 320, side plate; 330, through hole; 340, baffle;

[0025] 400, assembly rod;

[0026] 500, roller;

[0027] 600. Limiting groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-4 The utility model provides a technical solution: a conductive caster with automatic braking function, comprising a mounting frame 100 and a bracket 300 assembled at the bottom of the mounting frame 100 through two elastic members 200, and a roller 500 rotatably mounted in the bracket 300 through an assembly rod 400. The mounting frame 100 comprises a positioning plate 110 and a column 120 vertically welded to the bottom of the positioning plate 110, a brake pad 130 is fixedly mounted at the bottom of the column 120, and wing plates 140 for mounting the top of the elastic member 200 are vertically welded on both outer side walls of the column 120. The bracket 300 comprises a fixing plate 310 for mounting the bottom ends of the two elastic members 200 and two side plates 320 parallel to each other and vertically welded to the bottom of the fixing plate 310 for the assembly rod 400 to penetrate and erect, and a through hole 330 is opened in the middle of the fixing plate 310 for the column 120 to movably penetrate.

[0030] Based on the above-mentioned structural setting, the conductive caster with automatic braking function is composed of a mounting frame 100, a bracket 300, an assembly rod 400, a roller 500 and two elastic members 200, wherein the roller 500 is rotatably assembled at the bottom of the bracket 300 through the assembly rod 400, the mounting frame 100 is fixedly connected to the bottom of the device, and the bracket 300 is elastically connected to the mounting frame 100 through two elastic members 200. Specifically, during use, when the device equipped with this product bears weight, such as Chinese patent CN209454464U, when the user sits on a chair equipped with this product, due to the user's own weight, the mounting frame 100 will move downward, driving the column 120 passing through the through hole 330 to move downward until the brake pad 130 is pressed and contacted with the outer surface of the roller 500. Thereby, the effect of automatic braking is achieved. When the user leaves the chair, the two elastic members 200 drive the mounting frame 100 to reset, so that the brake pad 130 is away from the roller 500, and the roller 500 is reset and rotated. The conductive caster with automatic braking function abandons the current braking method of the card block and the prismatic card slot, and replaces it with contact friction braking. With the help of the two elastic members 200 and the user's own gravity, the brake pad 130 can be brought into contact with the top of the roller 500, thereby achieving the purpose of braking. Compared with the current card-connected braking, there will be no jamming phenomenon. At the same time, the brake pad 130 is designed to be above the roller 500 and does not affect the installation distance between the side panel 320 and the roller 500, thereby reducing the mixing of external debris and ensuring the stable operation of the roller 500.

[0031] Furthermore, the elastic member 200 includes a screw rod 210 and a nut 220 for limiting and mounting one end of the screw rod 210 on the wing plate 140, and a washer 230 for fixing the head of the screw rod 210 on the fixing plate 310, and also includes a return spring 240 sleeved on the outside of the screw rod 210, and the two ends of the return spring 240 are respectively pressed against the top of the washer 230 and the bottom of the wing plate 140. The elastic member 200 is an elastic connection structure of the bracket 300 at the bottom of the mounting frame 100. Specifically, during the installation of the elastic member 200, the screw 210 is first penetrated by the bottom of the fixing plate 310 and cooperates with the washer 230 threadedly assembled on the outside of the screw 210 to realize the positioning and installation of the head of the screw 210 on the fixing plate 310. Subsequently, the return spring 240 is sleeved on the outside of the screw 210. At the same time, the end of the screw 210 away from the head passes through the wing plate 140 and is threadedly assembled with the nut 220. The nut 220 can realize the limited installation of the top end of the screw 210 on the wing plate 140. In addition, during use, since the return spring 240 is pressed between the washer 230 and the wing plate 140, the elastic strength of the return spring 240 can be adjusted in real time by adjusting the position of the nut 220 at the end of the screw 210.

[0032] Furthermore, the tops of the two washers 230 and the bottoms of the two wing plates 140 are provided with limiting grooves 600 for accommodating the ends of the return springs 240. The two ends of the return spring 240 are respectively pressed against the bottom of the wing plate 140 and the top of the washer 230. By providing the limiting grooves 600 on one side of both of them near the ends of the return springs 240, the ends of the return springs 240 can be clamped and accommodated in the limiting grooves 600, ensuring that the return springs 240 are securely and firmly mounted between the washers 230 and the wing plates 140.

[0033] Furthermore, two baffles 340 are symmetrically distributed and respectively cover the front and rear sides of the top of the roller 500, and the two baffles 340 are welded to the bracket 300. The two baffles 340 are respectively used to provide protection for the front and rear of the roller 500, which can further prevent the mixing of external debris and ensure the stability of the operation of the roller 500.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A conductive caster with automatic braking function, characterized in that: It comprises a mounting frame (100), a bracket (300) mounted on the bottom of the mounting frame (100) via two elastic members (200), and a roller (500) rotatably mounted in the bracket (300) via a mounting rod (400); The mounting frame (100) comprises a positioning plate (110) and a column (120) vertically welded to the bottom of the positioning plate (110); a brake pad (130) is fixedly mounted on the bottom of the column (120); and wing plates (140) for mounting the top of the elastic member (200) are vertically welded on both outer side walls of the column (120); The bracket (300) comprises a fixing plate (310) for mounting the bottom ends of the two elastic members (200) and two side plates (320) which are parallel to each other and vertically welded to the bottom of the fixing plate (310) for the assembly rod (400) to pass through and be erected. A through hole (330) is provided in the middle of the fixing plate (310) for the column (120) to movably pass through.

2. The conductive caster with automatic braking function according to claim 1, characterized in that: The elastic member (200) comprises a screw rod (210) and a nut (220) for limiting one end of the screw rod (210) and mounting it on the wing plate (140), and a washer (230) for fixing the head of the screw rod (210) on the fixing plate (310), and further comprises a return spring (240) sleeved on the outside of the screw rod (210), wherein two ends of the return spring (240) are respectively in pressure contact with the top of the washer (230) and the bottom of the wing plate (140).

3. The conductive caster with automatic braking function according to claim 2, characterized in that: The tops of the two washers (230) and the bottoms of the two wing plates (140) are both provided with limiting grooves (600) for accommodating the ends of the return springs (240).

4. The conductive caster with automatic braking function according to claim 1, characterized in that: It also comprises two baffles (340) which are symmetrically distributed and respectively cover the front and rear sides of the top of the roller (500), and the two baffles (340) are both welded to the bracket (300).

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