Trundle support of movable furniture

Abstract

The utility model belongs to the technical field of trundle supports, and particularly relates to a trundle support of movable furniture, which comprises a mounting frame in the shape of a rectangular frame with an open bottom wall, and a transverse double-thread screw is rotatably arranged in the center of the side wall of an inner cavity of the mounting frame. Outer threads of the left section and the right section of a rod body of the double-thread screw are opposite in trend and are in threaded connection with movable plates in a transmission mode, side plate frames are arranged at the lower ends of the movable plates, and the tops of the side plate frames are attached to the bottom edge of the mounting frame. When the wheel body is used for a long time and is seriously abraded, the wheel body can be disassembled, during disassembly, a sliding rod is pulled through a lifting ring in the vertical direction, an inserting block is pulled out of a groove hole of an inserting groove, then a double-thread screw is driven to rotate through a rotary knob, and two movable plates move in the opposite directions of a rod body of the double-thread screw and a rod body of a guide rod; and after the end part of the connecting rod is pulled out of the insertion hole, the wheel body and the connecting rod can be disassembled without any tool, and the wheel body can be conveniently and independently replaced by a new one.

Description

Technical Field

[0001] The utility model relates to the technical field of caster brackets, in particular to a caster bracket for mobile furniture. Background Art

[0002] Furniture is a general term for various appliances used by people in their indoor life. It has the following important functions: providing functions: such as chairs for people to sit, tables for work and dining, etc.; increasing convenience: like cabinets, it is convenient to store items and keep the space tidy; creating atmosphere: furniture of different styles can create different indoor environment atmospheres.

[0003] For the convenience of use, some existing furniture will be equipped with casters at the bottom, such as casters installed around the bottom of some chairs to facilitate the movement of the chairs. In order to adjust their sitting posture, some people will sit on the chairs and move them directly. This way of use will easily cause serious wear of the wheel body. Traditional casters are mostly set as an integral whole, and the bracket and the wheel body cannot be disassembled, that is, the worn wheel body cannot be replaced separately, and can only be replaced as a whole, which wastes the bracket. The casters are mostly installed around the bottom of the furniture with screws, etc., and tools are needed for disassembly and installation, which is inconvenient. Therefore, it is necessary to develop a caster bracket for mobile furniture. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0006] A caster bracket for mobile furniture, comprising:

[0007] The mounting frame is in the shape of a rectangular frame with an open bottom wall, a horizontal double-headed screw is rotatably arranged at the center of the inner cavity side wall of the mounting frame, the external threads of the left and right sections of the rod body of the double-headed screw have opposite directions and are respectively screwed and driven to be provided with movable plates, a side plate frame is arranged at the lower end of the movable plate, the top of the side plate frame is in contact with the bottom edge of the mounting frame, the two side plate frames are symmetrically arranged with respect to the mounting frame and the double-headed screw, and the lower parts of the side walls of the two side plate frames are provided with aligned sockets;

[0008] A wheel body is provided between the two side plate frames, a horizontal connecting rod is provided through the center of the side wall of the wheel body through a bearing sleeve, the rod bodies at both ends of the connecting rod are respectively inserted into the left and right jacks, and slots are provided above the rod bodies at both ends of the connecting rod;

[0009] A fixing plate is provided on one side away from the two side plate frames, the fixing plate is located above the connecting rod, and a vertical sliding rod is vertically slid through the upper and lower walls of the fixing plate, the sliding rod is located directly above the slot and an insert block for inserting into the slot hole is provided at the bottom.

[0010] As a preferred solution of the caster bracket of the mobile furniture described in the utility model, one end of the rod body of the double-headed screw extends and rotates to penetrate the side wall of the installation frame, and the end is provided with a knob.

[0011] As a preferred solution of a caster bracket for mobile furniture described in the utility model, the inner cavity side wall of the mounting frame is provided with two guide rods parallel to the double-headed screw, the two guide rods are symmetrically arranged front and back about the double-headed screw, and the rod body of the guide rod slides through the side wall of the movable plate.

[0012] As a preferred solution of the caster bracket of a movable furniture described in the utility model, the side wall of the movable plate is provided with a screw hole for screwing the double-headed screw rod body for transmission, and a guide hole for the guide rod body to slide through.

[0013] As a preferred solution of the caster bracket of a movable furniture described in the utility model, a mounting plate is rotatably provided at the top center of the mounting frame through a bearing seat, and mounting holes are opened around the mounting plate near the top corners.

[0014] As a preferred solution of a caster bracket for mobile furniture described in the utility model, the outer diameter of the connecting rod is equal to the inner diameter of the socket, the outer diameter of the plug block is larger than the outer diameter of the sliding rod, and the outer diameter of the plug block is equal to the inner diameter of the slot.

[0015] As a preferred solution of a caster bracket for mobile furniture described in the utility model, a vertical spring is arranged between the top of the plug block and the bottom of the fixed plate, the shaft gap of the sliding rod passes through the inner side of the spring, and a lifting ring is arranged on the top of the sliding rod.

[0016] Compared with the prior art, the beneficial effect of the utility model is that when the wheel body is severely worn due to long-term use, it can be disassembled. When disassembling, first pull the sliding rod in the vertical direction through the lifting ring to pull the plug out of the slot hole of the slot, and then drive the double-headed screw to rotate through the knob, so that the two movable plates move in opposite directions along the rod body of the double-headed screw and the rod body of the guide rod, so that the side plate frame gradually expands. After the end of the connecting rod is pulled out of the socket, the wheel body and the connecting rod can be disassembled without any tools, which makes it convenient to replace a new wheel body separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 Structural schematic diagram of the installation frame section;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the structure in the middle and side view direction;

[0021] Figure 4 For this utility model Figure 2 The schematic diagram of the structure after the wheel body is disassembled;

[0022] Figure 5 For this utility model Figure 4 Schematic diagram of the structure in the middle and side view direction;

[0023] Figure 6 The utility model is a schematic structural diagram of screw holes and guide holes provided on the movable plate.

[0024] In the figure: mounting frame 100, stud screw 110, external thread 120, screw hole 121, movable plate 130, side plate frame 140, jack 150, knob 160, guide rod 170, guide hole 171, bearing seat 180, mounting plate 190, wheel body 200, bearing sleeve 210, connecting rod 220, slot 230, fixing plate 300, sliding rod 310, insert block 320, spring 330, lifting ring 340. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] See also Figure 1-Figure 6 , shows a schematic diagram of the structure of a caster bracket for mobile furniture of the utility model, please refer to Figure 1-Figure 6 , a caster bracket for mobile furniture is introduced in detail.

[0030] A caster bracket for mobile furniture, comprising a mounting frame 100, the mounting frame 100 is in the shape of a rectangular frame with an open bottom wall, a horizontal double-headed screw 110 is rotatably arranged at the center of the inner cavity side wall of the mounting frame 100, the external threads 120 of the left and right sections of the rod body of the double-headed screw 110 are in opposite directions and are respectively screwed and driven to be arranged with movable plates 130, a side plate frame 140 is arranged at the lower end of the movable plate 130, the top of the side plate frame 140 is in contact with the bottom edge of the mounting frame 100, the two side plate frames 140 are arranged symmetrically with respect to the mounting frame 100 and the double-headed screw 110, and the lower parts of the side walls of the two side plate frames 140 are provided with aligned sockets 150;

[0031] A wheel body 200 is disposed between the two side frame frames 140. A horizontal connecting rod 220 is rotatably penetrated through the center of the side wall of the wheel body 200 through a bearing sleeve 210. The rod bodies at both ends of the connecting rod 220 are respectively inserted into the left and right insertion holes 150. Slots 230 are provided above the rod bodies at both ends of the connecting rod 220.

[0032] A fixing plate 300 is provided on the side away from the two side plate frames 140, and the fixing plate 300 is located above the connecting rod 220. A vertical sliding rod 310 is vertically slidably penetrated through the upper and lower walls of the fixing plate 300. The sliding rod 310 is located directly above the slot 230 and an insert block 320 for inserting into the hole of the slot 230 is provided at the bottom.

[0033] Furthermore, one end of the rod of the double-headed screw 110 extends and rotates to penetrate the side wall of the installation frame 100, and a knob 160 is provided at the end, and the double-headed screw 110 can be conveniently driven to rotate by the provided knob 160.

[0034] Furthermore, two guide rods 170 parallel to the double-headed screw 110 are provided on the inner cavity side wall of the mounting frame 100, and the two guide rods 170 are symmetrically arranged with respect to the double-headed screw 110, and the rod body of the guide rod 170 slides through the side wall of the movable plate 130, and the side wall of the movable plate 130 is provided with a screw hole 121 for screwing the rod body of the double-headed screw 110 and a guide hole 171 for sliding the rod body of the guide rod 170 through. When the knob 160 is rotated, since the movable plate 130 is screwed to the rod body of the double-headed screw 110, and the movable plate 130 is slidably connected to the rod body of the guide rod 170, the two movable plates 130 will not rotate, but move in the opposite direction of the rod body of the double-headed screw 110 and the rod body of the guide rod 170.

[0035] Furthermore, a mounting plate 190 is rotatably provided at the top center of the mounting frame 100 through a bearing seat 180, and mounting holes are opened around the mounting plate 190 near the top corners. By adapting screws to the mounting plate 190, the mounting plate 190 can be conveniently fixed around the bottom of the furniture to be moved, and the bearing seat 180 is provided so that the wheel body 200 can rotate freely, similar to a universal wheel.

[0036] Furthermore, the outer diameter of the connecting rod 220 is equal to the inner diameter of the socket 150, so that after the connecting rod 220 is inserted into the socket 150, the wheel body 200 will not rock up and down and forward and backward. The outer diameter of the plug block 320 is greater than the outer diameter of the sliding rod 310, and the outer diameter of the plug block 320 is equal to the inner diameter of the slot 230. After the plug block 320 is inserted into the slot 230, the wheel body 200 will not rock left and right, thereby improving the stability of the wheel body 200 after installation.

[0037] Furthermore, a vertical spring 330 is provided between the top of the plug block 320 and the bottom of the fixed plate 300, and the gap of the rod body of the sliding rod 310 passes through the inner side of the spring 330. Since the outer diameter of the plug block 320 is larger than the outer diameter of the sliding rod 310, the fixed spring 330 can push the plug block 320, so that the plug block 320 can be inserted into the hole of the slot 230 more stably, which is convenient for fixing the connecting rod 220. A lifting ring 340 is provided on the top of the sliding rod 310. When disassembling the connecting rod 220, the lifting ring 340 can be pulled first to pull the plug block 320 out of the slot hole of the slot 230, and then the distance between the two side plate frames 140 can be adjusted to realize the disassembly of the wheel body 200.

[0038] During specific use, when the wheel body 200 is severely worn due to long-term use, it can be disassembled. When disassembling, first pull the sliding rod 310 in the vertical direction through the lifting ring 340, pull the plug block 320 out of the slot 230, and then drive the double-headed screw 110 to rotate through the knob 160, so that the two movable plates 130 move in the opposite direction along the rod body of the double-headed screw 110 and the rod body of the guide rod 170, so that the side plate frame 140 gradually expands. After the end of the connecting rod 220 is pulled out of the socket 150, the wheel body 200 and the connecting rod 220 can be disassembled without any tools, which makes it convenient to replace the new wheel body 200 separately.

[0039] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A caster bracket for mobile furniture, characterized in that: include: An installation frame (100), the installation frame (100) is in the shape of a rectangular frame with an open bottom wall, a horizontal double-headed screw (110) is rotatably arranged at the center of the inner cavity side wall of the installation frame (100), the external threads (120) of the left and right sections of the rod body of the double-headed screw (110) run in opposite directions and are respectively screwed and driven to be provided with movable plates (130), a side plate frame (140) is arranged at the lower end of the movable plate (130), the top of the side plate frame (140) is in contact with the bottom edge of the installation frame (100), the two side plate frames (140) are arranged in a left-right symmetrical manner with respect to the installation frame (100) and the double-headed screw (110), and the lower parts of the side walls of the two side plate frames (140) are provided with aligned sockets (150); A wheel body (200), wherein the wheel body (200) is disposed between the two side plate frames (140), wherein a horizontal connecting rod (220) is rotatably penetrated through the center of the side wall of the wheel body (200) via a bearing sleeve (210), wherein the rod bodies at both ends of the connecting rod (220) are respectively inserted into the left and right insertion holes (150), and slots (230) are provided above the rod bodies at both ends of the connecting rod (220); A fixing plate (300) is provided on one side of the two side plate frames (140) away from each other, the fixing plate (300) is located above the connecting rod (220), and a vertical sliding rod (310) is vertically slidably penetrated through the upper and lower walls of the fixing plate (300), the sliding rod (310) is located directly above the slot (230) and has an insert block (320) at the bottom for inserting into the hole of the slot (230).

2. The caster bracket for mobile furniture according to claim 1, characterized in that: One end of the rod of the double-headed screw (110) extends and rotates to penetrate the side wall of the installation frame (100), and a knob (160) is provided at the end.

3. The caster bracket for mobile furniture according to claim 1, characterized in that: Two guide rods (170) parallel to the double-headed screw (110) are arranged on the inner cavity side wall of the installation frame (100); the two guide rods (170) are arranged symmetrically with respect to the double-headed screw (110) in a front-to-back direction, and the rod bodies of the guide rods (170) slide through the side wall of the movable plate (130).

4. The caster bracket for movable furniture according to claim 3, characterized in that: The side wall of the movable plate (130) is provided with a screw hole (121) for the rod body of the double-headed screw (110) to be screwed and driven, and a guide hole (171) for the rod body of the guide rod (170) to slide through.

5. The caster bracket for movable furniture according to claim 1, characterized in that: A mounting plate (190) is rotatably provided at the top center of the mounting frame (100) via a bearing seat (180), and mounting holes are provided around the mounting plate (190) near the top corners.

6. The caster bracket for movable furniture according to claim 1, characterized in that: The outer diameter of the connecting rod (220) is equal to the inner diameter of the insertion hole (150), the outer diameter of the insertion block (320) is greater than the outer diameter of the sliding rod (310), and the outer diameter of the insertion block (320) is equal to the inner diameter of the slot (230).

7. The caster bracket for movable furniture according to claim 6, characterized in that: A vertical spring (330) is arranged between the top of the insert block (320) and the bottom of the fixing plate (300), the shaft gap of the sliding rod (310) passes through the inner side of the spring (330), and a lifting ring (340) is arranged at the top of the sliding rod (310).

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