Improved rolling bag chassis

Abstract

To provide an improved chassis for a bag with casters, which includes a caster chassis having bottom casters movably connected to the left and right sides of the lower part of the rear wall via hinge shafts. [Solution] A frame mounting groove 20 is formed on the rear wall of the caster chassis, a support frame 30 is inserted and fitted into the frame mounting groove, the upper part of the support frame is movably connected to the caster chassis via a hinge shaft, a support caster 40 is attached to the bottom of a vertical support tube 31 of the support frame, the frame mounting groove includes two vertical grooves 21 extending up and down, left and right, and a caster receiving groove 22 is formed on the rear wall of the caster chassis at the bottom end of the vertical groove. Simply by grasping the gripping rod 3 with your hand and pulling downward, the positioning part can be retracted into the fixed sleeve 32, and the protruding positioning part can be retracted into the vertical support tube 31 to store the support frame, making installation and folding easy and highly efficient.

Description

[Technical Field]

[0001] The present invention relates to the field of golf sports equipment, and more particularly to an improved chassis for a wheeled bag. [Background technology]

[0002] When transporting a conventional golf bag, it is generally necessary to place the golf bag in a wheeled bag. A wheeled bag chassis is generally attached to the bottom of the wheeled bag, and casters are attached to the lower part of the chassis. The wheeled bag can be tilted and towed by manually pulling the top of the wheeled bag. However, because the bag is supported and towed by two casters, only an upward force from a person can ensure that the bag can be moved and transported in an inclined state. This requires a lot of manual labor, which is inconvenient and requires a lot of manual labor, especially for people with weak strength.

[0003] Therefore, in the suitcase device with fully retractable, movable, biased cantilever support legs of Chinese Patent Application No. 200810126247.2, the pair of support legs is designed to support the weight of the suitcase device when in use. When not in use, the support legs are fully retracted into the suitcase device and can be easily and safely transferred to an extended operating position. This makes it easy to transport large and heavy objects in the suitcase device, but it is cumbersome to operate because the entire support leg frame must be pulled downward and inverted to operate it. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention overcomes the drawbacks of the prior art and aims to provide an improved chassis for wheeled bags that allows the positioning part to be retracted into the fixed sleeve simply by grasping the gripping rod and pulling downward with one hand, and the support frame can be stored by retracting the protruding positioning part into the vertical support tube, making it easy to install and fold and highly efficient to use. [Means for solving the problem]

[0005] The present invention uses the following technical means to solve the above technical problems.

[0006] An improved chassis for a wheeled bag includes a caster chassis having bottom casters movably connected to the left and right sides of the lower part of a rear wall surface via hinge shafts, wherein a frame mounting groove is formed on the rear wall surface of the caster chassis, a support frame is inserted into and fitted into the frame mounting groove, an upper part of the support frame is movably connected to the caster chassis via hinge shafts, and support casters are attached to the bottom parts of vertical support tubes of the support frame; The frame mounting groove includes two vertical grooves, one on the left and one on the right, extending vertically. Caster receiving grooves are formed on the rear wall surface of the caster chassis at the bottom ends of the vertical grooves, and the caster receiving grooves are connected to the corresponding vertical grooves. An intermediate mounting groove is formed between the two vertical grooves, and an upper groove is formed at the top between the two vertical grooves. Both ends of the upper groove and both ends of the intermediate mounting groove are connected to the two vertical grooves. A gripping rod is provided between the two vertical support tubes, and movable blocks are attached to both ends of the gripping rod. The movable blocks are inserted into the corresponding vertical support tubes, and their outer walls are fitted closely to the inner walls of the vertical support tubes. Both ends of the gripping rod are inserted into long through grooves that are formed in the centers of the adjacent side plates of the two vertical support tubes and extend vertically.

[0007] A semicircular groove is formed in the front wall surface of the upper end of the vertical groove, and an upper protrusion positioning recess extending upward is formed in the inner wall surface of the upper end of the semicircular groove, and a front protrusion positioning recess extending forward is formed in the front end wall surface, The support frame includes two vertical support pipes each having a vertical through-hole formed in the center thereof, the vertical support pipes being inserted into the corresponding vertical grooves, and fixed sleeves being inserted into the upper ends thereof, the inner walls of the fixed sleeves being in close contact with the upper outer walls of the vertical support pipes, and hinge shafts being inserted into the corresponding through-holes of the two left and right side plates of the central part of the fixed sleeve and the two left and right side plates of the upper part of the vertical support pipes, the ends of the hinge shafts extending from the left and right outer walls of the fixed sleeves and movably connected to the left and right side walls of the corresponding vertical grooves, The position limiting post is inserted into the upper part of the vertical support tube, and the positioning part fixed or molded to the upper end of the position limiting post extends from the upper end of the vertical support tube and the upper end of the fixing sleeve and is inserted into the upper protrusion positioning recess, and the lower outer wall of the positioning part is in close contact with the top inner wall of the corresponding vertical support tube, and the moving block is inserted into the vertical support tube below the position limiting post, and the upper vertical rod is fixed to the top surface of the moving block, and the top end of the upper vertical rod is fixed to the bottom end of the position limiting post.

[0008] A vertical connecting rod is fixed to the bottom of the moving block, a lower lifting head is fixed to the bottom end of the vertical connecting rod, a vertical guide plate is fixed to the bottom end of the lower lifting head, the bottom surface of the vertical guide plate is a slanted wall surface, an adjustment position limiting post is fixed to the inner wall of the vertical support pipe below the lower lifting head, a downwardly extending insertion groove is formed in the center of the top surface of the adjustment position limiting post, a lower positioning block is fixed to the bottom surface of the adjustment position limiting post, the lower positioning block is inserted into the vertical support pipe, a lateral insertion hole is formed in the outer wall extending inwardly in a lateral direction, a lower insertion groove is formed in the center of the top surface, the lower insertion groove is connected to and corresponds to the insertion groove, a lateral positioning block is inserted into the lateral insertion hole, and a guide insertion hole is formed in the top surface. the inner wall surface of the guide insertion hole is a slanted wall surface extending obliquely inward and downward, the vertical guide plate is inserted into the insertion groove and the lower insertion groove, its lower portion is close to or in close contact with the front and rear inner walls of the lower insertion groove, and its bottom portion is inserted into the guide insertion hole, with the bottom surface being a slanted wall surface that is closely fitted with the slanted wall surface of the guide insertion hole, a lateral spring is inserted into the lateral insertion hole, one end of the lateral spring is pressed against the inner end surface of the lateral insertion hole and the other end is inserted into the insertion hole at the inner end of the lateral positioning block and is located on the inner end surface of the insertion hole, a protrusion positioning portion is formed in the center of the outer end surface of the lateral positioning block, the protrusion positioning portion is inserted into a through hole in the outer wall plate of the vertical support pipe, and the outer end is inserted into a positioning recess formed in the side wall of the corresponding vertical groove.

[0009] A protrusion positioning portion is formed on the left or right wall of the central portion of the vertical guide plate, and an elastic bending position limiting portion is formed on the left or right wall of the upper part of the insertion groove of the adjustment position limiting post, and the bottom end of the elastic bending position limiting portion is pressed against the top end of the corresponding protrusion positioning portion.

[0010] A downwardly extending blocking portion is molded at the rear of the top surface of both ends of the upper groove, and the blocking portion is located behind the left or right portion of the gripping rod and blocks the left or right portion of the gripping rod. [Effects of the Invention]

[0011] The present invention has the following outstanding effects:

[0012] It has a reversible support frame with support casters attached to the bottom, and after the support frame is unfolded, it can be supported and moved by four casters, including two support casters and the bottom casters, so there is no need for upward force from a person, and the chassis for wheeled bags can be moved horizontally using only horizontal pulling force, making it easy to use and highly effective.

[0013] The positioning part can be retracted into the fixed sleeve simply by grasping the gripping rod with one's hand and pulling it downward, and the support frame can be stored by retracting the protruding positioning part into the vertical support tube, making it easy to operate and highly effective to use.

[0014] After deployment, the lateral spring is returned to its original position, so that the positioning part extends from the top end of the fixing sleeve and can be inserted into the front protrusion positioning recess for fixing, which is convenient to use; When not in use, the gripping rod is pulled downward to retract the positioning part into the fixed sleeve, retract the protruding positioning part into the vertical support tube, and invert the support frame to accommodate it in the frame mounting groove, thereby reducing the amount of external space it occupies. After entering the frame mounting groove, the elastic restoring force of the lateral spring causes the positioning part to extend from the top end of the fixed sleeve and insert into the upper protruding positioning recess, thereby locking the support frame. Inserting the protruding positioning part into the corresponding positioning recess makes it less likely to fall out of the frame mounting groove, improving the locking effect and improving safety in use. [Brief explanation of the drawings]

[0015] [Figure 1]1 is a schematic diagram of the present invention. [Figure 2] FIG. 2 is a partial schematic diagram of the present invention from another perspective. [Figure 3] FIG. 2 is a partial cross-sectional view of the present invention. [Figure 4] FIG. 1 is a partial cross-sectional view of the support frame and caster chassis. [Figure 5] FIG. 5 is a partially enlarged view of FIG. [Figure 6] FIG. 2 is a partial schematic diagram of the present invention as seen from the rear. DETAILED DESCRIPTION OF THE INVENTION

[0016] As shown in Figures 1 and 6, the improved wheeled bag chassis includes a caster chassis 10 having bottom casters 11 movably connected to the left and right sides of the lower part of the rear wall via hinge shafts. A frame mounting groove 20 is formed in the rear wall of the caster chassis 10. A support frame 30 is inserted into and fitted into the frame mounting groove 20. The upper part of the support frame 30 is movably connected to the caster chassis 10 via the hinge shaft. A support caster 40 is attached to the bottom of a vertical support tube 31 of the support frame, and the support caster 40 is a universal wheel.

[0017] The frame mounting groove 20 includes two vertical grooves 21 extending vertically, one on the left and one on the right. A caster receiving groove 22 is formed on the rear wall of the caster chassis 10 at the bottom end of the vertical groove 21. The caster receiving groove 22 communicates with the corresponding vertical groove 21. An intermediate mounting groove 23 is formed between the two vertical grooves 21. An upper groove 24 is formed at the top between the two vertical grooves 21. Both ends of the upper groove 24 and both ends of the intermediate mounting groove 23 are connected to the two vertical grooves 21. A horizontal main rod is fixed between the two vertical support pipes 31. The horizontal main rod is inserted into the intermediate mounting groove 23. A gripping rod 3 is provided between two vertical support tubes 31, and movable blocks 34 are attached to both ends of the gripping rod 3. The movable blocks 34 are inserted into the corresponding vertical support tubes 31, with their outer walls fitted closely to the inner walls of the vertical support tubes 31, and both ends of the gripping rod 3 are inserted into long through grooves formed in the center of the adjacent side plates of the two vertical support tubes 31 and extending vertically.

[0018] A semicircular groove 211 is formed on the front wall surface of the upper end of the vertical groove 21, and an upper protrusion positioning recess extending upward is formed on the upper inner wall surface of the semicircular groove 211, and a front protrusion positioning recess extending forward is formed on the front end wall surface.The semicircular groove 211 allows the tops of the two vertical support pipes 31 of the support frame 30 to rotate along the semicircular groove 211 when the two vertical support pipes 31 of the support frame 30 are inverted.

[0019] The support frame 30 includes two vertical support pipes 31 (each having a rectangular cross section) with a vertical through-hole formed in the center. The vertical support pipes 31 are inserted into the corresponding vertical grooves 21, and fixed sleeves 32 are inserted into the upper ends thereof. The inner walls of the fixed sleeves 32 are in close contact with the upper outer walls of the vertical support pipes 31. Hinge shafts are inserted into the corresponding through-holes in the two left and right side plates of the center of the fixed sleeve 32 and the two left and right side plates of the upper part of the vertical support pipes 31. Both ends of the hinge shaft extend from the left and right outer walls of the fixed sleeve and are movably connected to the left and right side walls of the corresponding vertical grooves 21. The position limiting post 33 is inserted into the upper part of the vertical support tube 31, and the positioning part fixed or molded to the upper end of the position limiting post 33 extends from the upper end of the vertical support tube 31 and the upper end of the fixing sleeve 32 and is inserted into the upper protrusion positioning recess, and the lower outer wall of the positioning part is in close contact with the corresponding top inner wall of the vertical support tube 31. A movable block 34 is inserted into the vertical support tube 31 below the position limiting post 33, and an upper vertical rod 341 is fixed to the top surface of the movable block 34, and the top end of the upper vertical rod 341 is fixed to the bottom end of the position limiting post 33.

[0020] A vertical connecting rod 36 is fixed to the bottom of the moving block 34, a lower lifting head 37 is fixed to the bottom end of the vertical connecting rod 36, a vertical guide plate 38 is fixed to the bottom end of the lower lifting head 37, the bottom surface of the vertical guide plate 38 is a slanted wall surface, an adjustment position limiting post 50 is fixed to the inner wall of the vertical support pipe 31 below the lower lifting head 37, a downwardly extending insertion groove is formed in the center of the top surface of the adjustment position limiting post 50, a lower positioning block is fixed to the bottom surface of the adjustment position limiting post 50, the lower positioning block is inserted into the vertical support pipe 31, a lateral insertion hole 51 is formed in the outer wall extending inwardly in the lateral direction, a lower insertion groove is formed in the center of the top surface, the lower insertion groove is connected to and corresponds to the insertion groove, a lateral positioning block 52 is inserted into the lateral insertion hole 51, and a guide insertion hole 52 is formed on the top surface 3 is formed, the inner wall surface of the guide insertion hole 53 is a slanted wall surface extending diagonally inward and downward, the vertical guide plate 38 is inserted into the insertion groove and the lower insertion groove, its lower part is close to or in close contact with the front and rear inner walls of the lower insertion groove, and its bottom is inserted into the guide insertion hole 53, the bottom surface is a slanted wall surface and is tightly fitted with the slanted wall surface of the guide insertion hole 53, a lateral spring 1 is inserted into the lateral insertion hole 51, one end of the lateral spring 1 is pressed against the inner end surface of the lateral insertion hole 51, and the other end is inserted into the insertion hole at the inner end of the lateral positioning block 52 and is located on the inner end surface of the insertion hole, a protrusion positioning portion 521 is formed in the center of the outer end surface of the lateral positioning block 52, and the protrusion positioning portion 521 is inserted into a through hole in the outer wall plate of the vertical support pipe 31, and its outer end is inserted into a positioning recess formed in the side wall of the corresponding vertical groove 21

[0021] A protrusion positioning portion 381 is formed on the left or right wall of the central portion of the vertical guide plate 38, and an elastic bending position limiting portion 55 is formed on the left or right wall of the upper part of the insertion groove of the adjustment position limiting post 50, and the bottom end of the elastic bending position limiting portion 55 is pressed against the top end of the corresponding protrusion positioning portion 381.

[0022] A downwardly extending blocking portion 241 is formed at the rear of the top surface of both ends of the upper groove 24, and the blocking portion 241 is located behind the left or right part of the gripping rod 3 and blocks the left or right part of the gripping rod 3.

[0023] The central part of the gripping rod 3 is a gripping portion extending laterally, and at both ends of the gripping portion extending laterally, diagonally extending connecting portions extending diagonally upward are formed, and the connecting portions molded at the ends of the diagonally extending connecting portions are inserted into the corresponding long through grooves and fixed to the corresponding moving blocks 34.

[0024] A guide protrusion is formed in the center of the front or rear wall of the insertion groove, and the guide protrusion is inserted into a vertical main guide through-groove formed in the center of the vertical guide plate 38, with the left and right side walls of the guide protrusion coming into close contact with the left and right side walls of the corresponding vertical main guide through-groove. The guide protrusion guides the vertical guide plate 38 as it moves up and down, and prevents the vertical guide plate 38 from shifting.

[0025] This embodiment has two states during use. One state is a folded state in which the support frame 30 is positioned in the frame mounting groove 20. At this time, the positioning portions at the upper ends of the position limiting posts 33 extend from the upper ends of the vertical support tubes 31 and the fixing sleeves 32 and are inserted into the upper protrusion positioning recesses. The outer ends of the protrusion positioning portions 521 are inserted into the positioning recesses formed in the side walls of the corresponding vertical grooves 21, thereby fixing the support frame 30 to the caster chassis 10. At this time, the blocking portion 241 is located behind the left or right part of the gripping rod 3 and blocks the left or right part of the gripping rod 3. In this state, no matter how the support frame 30 is pulled outward, it will not flip over and fall out of the frame mounting groove 20. This ensures a secure fixation, reduces the external space it occupies, and is highly efficient in use.

[0026] The other state is the use state, in which by grasping the gripping rod 3 by hand and pulling downward, the positioning part at the upper end of the position limiting post 33 is retracted and withdrawn from the upper protrusion positioning recess, and then the moving block 34 descends, the vertical guide plate 38 descends, and its bottom surface descends along the oblique wall surface of the guide insertion hole 53, causing the lateral positioning block 52 to move inward and laterally, compressing the lateral spring 1, at this time, the outer end of the protrusion positioning part 521 is disengaged from the positioning recess 211 formed in the side wall of the corresponding vertical groove 21, at this time, by simply pulling the gripping rod 3 backward with the hand holding it, the support frame 30 can be inverted and deployed, and during inversion, the fixing sleeve 32 and the vertical support 31 will move together until the upper end of the position limiting post 33 faces the front protrusion positioning recess. The top of the support tube 31 rotates along the semicircular groove 211, and as the lateral spring 1 returns, all parts return to their original positions, so that the upper ends of the position limiting posts 33 extend from the upper ends of the vertical support tube 31 and the fixing sleeve 32 and are inserted into the corresponding front protrusion positioning recesses to achieve locking. At this time, the support frame 30 is substantially perpendicular to the rear wall surface of the caster chassis 10. In this way, the caster chassis 10 is left in an inclined downward position and pressed against the ground by the support casters 40 and the bottom casters 11. Then, the caster chassis 10 can be manually pulled to move laterally, so that a golf bag, an airline bag, etc. can be placed in the caster chassis 10 and transported, which greatly reduces manual labor and is highly efficient in use.

Claims

1. An improved chassis for a wheeled bag includes a caster chassis (10) having bottom casters (11) movably connected to the left and right sides of the lower part of the rear wall surface via hinge shafts, wherein a frame mounting groove (20) is formed in the rear wall surface of the caster chassis (10), a support frame (30) is inserted and fitted into the frame mounting groove (20), an upper part of the support frame (30) is movably connected to the caster chassis (10) via hinge shafts, and a support caster (40) is attached to the bottom of a vertical support tube (31) of the support frame (30); The frame mounting groove (20) includes two vertical grooves (21) extending vertically, one on the left and one on the right. A caster accommodating groove (22) is formed in the rear wall surface of the caster chassis (10) at the bottom end of the vertical groove (21). The caster accommodating groove (22) communicates with the corresponding vertical groove (21). An intermediate mounting groove (23) is formed between the two vertical grooves (21). An upper groove (24) is formed above the two vertical grooves (21). Both ends of the upper groove (24) and both ends of the intermediate mounting groove (23) communicate with the two vertical grooves (21). a gripping rod (3) provided between the two vertical support tubes (31); moving blocks (34) attached to both ends of the gripping rod (3); the moving blocks (34) inserted into the corresponding vertical support tubes (31) with their outer walls fitted closely to the inner walls of the vertical support tubes (31); and both ends of the gripping rod (3) inserted into long through grooves formed in the centers of the adjacent side panels of the two vertical support tubes (31) and extending vertically.

2. A semicircular groove (211) is formed on the front wall surface of the upper end of the vertical groove (21), and an upper protrusion positioning recess extending upward is formed on the inner wall surface of the upper end of the semicircular groove (211), and a front protrusion positioning recess extending forward is formed on the front end wall surface. The support frame (30) includes two vertical support pipes (31) each having a vertical through-hole formed in the center thereof. The vertical support pipes (31) are inserted into the corresponding vertical grooves (21). A fixed sleeve (32) is inserted into the upper end of the vertical support pipe (31). The inner wall of the fixed sleeve (32) is in close contact with the upper outer wall of the vertical support pipe (31). A hinge shaft is inserted into the corresponding through-holes of the two left and right side plates in the center of the fixed sleeve (32) and the two left and right side plates in the upper part of the vertical support pipe (31). Both ends of the hinge shaft extend from the left and right outer walls of the fixed sleeve (32) and are movably connected to the left and right side walls of the corresponding vertical grooves (21).

2. The improved wheeled bag chassis according to claim 1, wherein a position limiting post (33) is inserted into the upper part of the vertical support tube (31), a positioning portion fixed or molded on the upper end of the position limiting post (33) extends from the upper end of the vertical support tube (31) and the upper end of the fixing sleeve (32) and is inserted into the upper protrusion positioning recess, a lower outer wall of the positioning portion is in close contact with the corresponding upper inner wall of the vertical support tube (31), the moving block (34) is inserted into the vertical support tube (31) below the position limiting post (33), an upper vertical rod (341) is fixed to the top surface of the moving block (34), and the top end of the upper vertical rod (341) is fixed to the bottom end of the position limiting post (33).

3. A vertical connecting rod (36) is fixed to the bottom of the moving block (34), a lower lifting head (37) is fixed to the bottom end of the vertical connecting rod (36), a vertical guide plate (38) is fixed to the bottom end of the lower lifting head (37), the bottom surface of the vertical guide plate (38) is an inclined wall surface, an adjustment position limiting post (50) is fixed to the inner wall of the vertical support pipe (31) below the lower lifting head (37), and a downward extending An insertion groove is formed in the adjustment position limiting post (50), a lower positioning block is fixed to the bottom surface of the adjustment position limiting post (50), the lower positioning block is inserted into the vertical support pipe (31), a lateral insertion hole (51) extending inward in the lateral direction is formed in the outer wall, a lower insertion groove is formed in the center of the top surface, the lower insertion groove is connected to and corresponds to the insertion groove, a lateral positioning block (52) is inserted into the lateral insertion hole (51), a guide insertion hole (53) is formed in the top surface, and the guide insertion hole ( The inner wall surface of the guide hole (53) is an oblique wall surface extending obliquely inward and downward, the vertical guide plate (38) is inserted into the insertion groove and the lower insertion groove, the lower part is close to or in close contact with the inner wall of the lower insertion groove at the front and rear, the bottom part is inserted into the guide insertion hole (53), the bottom surface is an oblique wall surface and is fitted in close contact with the oblique wall surface of the guide insertion hole (53), and a lateral spring (1) is inserted into the lateral insertion hole (51), and one end of the lateral spring (1) is in contact with the inner end of the lateral insertion hole (51).

3. The wheeled bag chassis according to claim 2, wherein the wheeled bag chassis has a first end pressed against a surface of the chassis, the other end of which is inserted into an insertion hole at the inner end of the lateral positioning block (52) and is located on the inner end surface of the insertion hole, and the lateral positioning block (52) has a protrusion positioning portion (521) formed in the center of its outer end surface, which is inserted into a through hole in the outer wall panel of the vertical support tube (31), and whose outer end is inserted into a positioning recess formed in the side wall of the corresponding vertical groove (21).

4. 4. The improved wheeled bag chassis according to claim 3, wherein a protrusion positioning portion (381) is formed on the left or right wall of the central portion of the vertical guide plate (38), and an elastic bending position limiting portion (55) is formed on the left or right wall of the upper portion of the insertion groove of the adjustment position limiting post (50), and the bottom end of the elastic bending position limiting portion (55) is pressed against the top end of the corresponding protrusion positioning portion (381).

5. 2. The improved chassis for a wheeled bag according to claim 1, wherein a downwardly extending blocking portion (241) is formed in the rear portion of the top surface of each end of the upper groove (24), and the blocking portion (241) is located behind the left or right portion of the gripping rod (3) and blocks the left or right portion of the gripping rod (3).

6. 6. The improved wheeled bag chassis according to claim 5, wherein the central portion of the gripping rod (3) is a gripping portion extending laterally, and both ends of the laterally extending gripping portion are formed with diagonally extending connecting portions extending diagonally upward, and the connecting portions molded at the ends of the diagonally extending connecting portions are inserted into corresponding long through-grooves and fixed to corresponding moving blocks (34).

7. 2. The improved wheeled bag chassis according to claim 1, wherein a guide protrusion is formed in the center of the front or rear wall of the insertion groove, the guide protrusion is inserted into a vertical main guide through groove formed in the center of the vertical guide plate (38), and the left and right side walls of the guide protrusion are in close contact with the left and right side walls of the corresponding vertical main guide through groove.

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