Hand pushing pipe fixing device for rollator

Abstract

A hand pushing pipe fixing device for a rollator comprises an outer pipe and an inner pipe arranged in the outer pipe in an up-down telescopic adjusting mode and further comprises a fixing base assembly, the fixing base assembly comprises a fixing base, a rotating piece and a sliding block, the fixing base is arranged between the outer pipe and the inner pipe, the rotating piece is rotationally arranged on the fixing base, and the sliding block is arranged on the fixing base in a sliding mode. When the rotating piece rotates in the first direction, the sliding block is driven to press the inner pipe inwards so that the inner pipe can be fastened in the outer pipe, and when the rotating piece rotates in the second direction, the sliding block loosens the inner pipe. The rotating piece and the sliding block are arranged, the rotating piece is rotationally arranged on the fixing base, the sliding block is arranged on the fixing base in a sliding mode, and when the rotating piece rotates in the first direction, the sliding block is driven to press the inner pipe inwards, so that the inner pipe is fastened in the outer pipe, and the inner pipe is prevented from loosening in the outer pipe; and when the rotating piece rotates in the second direction, the sliding block loosens the inner pipe, so that the inner pipe can be adjusted in an up-down telescopic mode, fastening and loosening of the inner pipe can be achieved only by rotating the rotating piece, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a walking aid technology field especially a hand push pipe fixing device for walking aid. BACKGROUND

[0002] The conventional four-wheel walking aid is provided with a hand push pipe, the hand push pipe comprises an outer pipe and an inner pipe which is arranged in the outer pipe and is up and down telescopic adjustment, the inner pipe is connected with a handle, the height of the handle is adjusted when the inner pipe is up and down telescopic, a fixing base is arranged between the outer pipe and the inner pipe, a pressing locking piece is rotatably arranged on the fixing base, a locking shaft is rotatably arranged on the pressing locking piece, adjusting holes which are distributed up and down are arranged on the inner pipe, after the height of the handle is adjusted, the locking shaft is inserted into the adjusting hole through the rotation of the pressing locking piece to lock the inner pipe, and then the inner pipe is fixed, but this fixing mode is not firm, and the inner pipe is easy to loosen in the outer pipe.

[0003] Therefore, it is necessary to make further improvement. CONTENT OF UTILITY MODEL

[0004] The utility model discloses a hand push pipe fixing device for walking aid which is simple in structure, convenient to operate, firm in fixing, good in user experience and high in practicability, and overcomes the defects of the prior art.

[0005] A hand push pipe fixing device for walking aid designed according to the purpose comprises an outer pipe and an inner pipe which is arranged in the outer pipe and is up and down telescopic adjustment, and is characterized in that: it further comprises a fixing base assembly, the fixing base assembly comprises a fixing base, a rotating piece and a sliding block, the fixing base is arranged between the outer pipe and the inner pipe, the rotating piece is rotatably arranged on the fixing base, and the sliding block is slidably arranged on the fixing base, when the rotating piece rotates to a first direction, the sliding block is pressed inward to press the inner pipe, so that the inner pipe is tightly fixed in the outer pipe, and when the rotating piece rotates to a second direction, the sliding block releases the inner pipe.

[0006] A limiting column is arranged on the rotating piece, a limiting convex part which is convexly arranged is arranged on the limiting column, when the rotating piece rotates to the first direction, the limiting convex part drives the sliding block to press the inner pipe inward, and when the rotating piece rotates to the second direction, the limiting convex part is separated from the sliding block to release the inner pipe.

[0007] A first acting arc surface is arranged on one end of the sliding block, a second acting arc surface is arranged on one side of the inner pipe, and the sliding block is pressed inward to press the inner pipe through the cooperation of the first acting arc surface and the second acting arc surface.

[0008] A third acting arc surface is arranged on the limiting convex part, a fourth acting arc surface is arranged on the other end of the sliding block, and the limiting convex part drives the sliding block to press the inner pipe inward through the cooperation of the third acting arc surface and the fourth acting arc surface.

[0009] A guide hole is arranged on the fixing base, and the sliding block is slidably arranged on the guide hole.

[0010] The outer tube is provided with a through hole, and the sliding block extends into the outer tube after passing through the through hole.

[0011] The fixing base is provided with a first rotating shaft, and the limiting column is provided with a first rotating hole, and the first rotating shaft is rotationally connected with the first rotating hole, so that the rotating part is rotationally arranged on the fixing base.

[0012] The rotating part is provided with an operation part for rotating operation of the rotating part.

[0013] The fixing base is provided with a limiting part, the limiting part is inserted into the outer tube, and the other side of the inner tube is abutted on the limiting part.

[0014] The fixing base assembly further comprises a pressing locking part, the pressing locking part is rotationally arranged on the fixing base, the pressing locking part is provided with a locking shaft rotationally arranged thereon, and the other side of the inner tube is provided with adjusting holes distributed upward and downward; when the pressing locking part is in the standby state, the locking shaft is inserted into the adjusting hole to lock the inner tube, and when the pressing locking part is pressed, the locking shaft is rotated to the third direction to make the locking shaft disengage from the adjusting hole, and then the inner tube is unlocked.

[0015] The hand pushing tube fixing device for the walking aid vehicle is provided with the rotating part and the sliding block, the rotating part is rotationally arranged on the fixing base, the sliding block is slidingly arranged on the fixing base, the rotating part is rotated to the first direction to drive the sliding block to press the inner tube inward to fasten the inner tube in the outer tube, so that the inner tube is prevented from loosening in the outer tube, the rotating part is rotated to the second direction to release the inner tube by the sliding block, so that the inner tube can be adjusted in up and down extension, and the fastening and releasing of the inner tube only need to rotate the operation of the rotating part, so that the operation is very convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the hand pushing tube fixing structure when the rotating part is rotated to the first direction in an embodiment of the utility model.

[0017] Figure 2 It is a whole structure schematic view of the hand pushing tube fixing structure when the rotating part is rotated to the second direction in an embodiment of the utility model.

[0018] Figure 3 It is an exploded structure schematic view of the hand pushing tube fixing structure in an embodiment of the utility model.

[0019] Figure 4 It is a sectional view of the hand pushing tube fixing structure when the rotating part is rotated to the first direction in an embodiment of the utility model.

[0020] Figure 5 It is a sectional view of the hand pushing tube fixing structure when the rotating part is rotated to the second direction in an embodiment of the utility model. Figure 4 It is an enlarged structure schematic view of the position D.

[0021] Figure 6 It is an enlarged structure schematic view of the position D.

[0022] Figure 7 For Figure 6 Enlarged structure diagram of the place F.

[0023] Figure 8 For the sectional view of the hand pushing pipe fixing structure in an embodiment of the utility model.

[0024] Figure 9 For Figure 8 Enlarged structure diagram of the place F.

[0025] Figure 10 For the overall structure diagram of the inner pipe in an embodiment of the utility model.

[0026] Figure 11 For the exploded structure diagram of the fixing seat assembly in an embodiment of the utility model.

[0027] Figure 12 For the exploded structure diagram of the fixing seat assembly in another orientation in an embodiment of the utility model. DETAILED DESCRIPTION

[0028] The utility model will be further described below in combination with the drawings and embodiments.

[0029] Referring to Figures 1-12 , the hand pushing pipe fixing device for the walking aid vehicle comprises an outer pipe 1 and an inner pipe 2 arranged in the outer pipe 1 in up-down telescopic adjustment mode, and further comprises a fixing seat assembly, the fixing seat assembly comprises a fixing seat 3, a rotating piece 4 and a sliding block 5, the fixing seat 3 is arranged between the outer pipe 1 and the inner pipe 2, the rotating piece 4 is rotatably arranged on the fixing seat 3, and the sliding block 5 is slidably arranged on the fixing seat 3; when the rotating piece 4 rotates to a first direction A, the sliding block 5 is driven to press the inner pipe 2 inward to fasten the inner pipe 2 in the outer pipe 1; when the rotating piece 4 rotates to a second direction B, the sliding block 5 releases the inner pipe 2, and at this time, the inner pipe 2 can be adjusted in up-down telescopic mode. The walking aid vehicle is a four-wheel walking aid vehicle.

[0030] One end of the rotating piece 4 is provided with a limiting column 6, the limiting column 6 is provided with a limiting convex part 7 arranged in a convex mode; when the rotating piece 4 rotates to the first direction A, the limiting convex part 7 drives the sliding block 5 to press the inner pipe 2 inward; when the rotating piece 4 rotates to the second direction B, the limiting convex part 7 is separated from the sliding block 5 to release the inner pipe 2.

[0031] One end of the sliding block 5 is provided with a first acting arc surface 8, one side of the inner pipe 2 is provided with a second acting arc surface 9, the sliding block 5 is pressed to the inner pipe 2 inward through the cooperation of the first acting arc surface 8 and the second acting arc surface 9, that is, the first acting arc surface 8 is pressed to the second acting arc surface 9 inward, and the first acting arc surface 8 and the second acting arc surface 9 are mutually attached.

[0032] The third acting arc surface 10 is arranged on the limiting convex part 7, and the fourth acting arc surface 11 is arranged on the other end of the sliding block 5. The limiting convex part 7 drives the sliding block 5 to press the inner tube 2 inward by cooperation of the third acting arc surface 10 and the fourth acting arc surface 11, that is, the limiting convex part 7 acts on the fourth acting arc surface 11 of the sliding block 5 through the third acting arc surface 10, thereby driving the sliding block 5 to press the inner tube 2 inward, and the third acting arc surface 10 and the fourth acting arc surface 11 are mutually attached.

[0033] The guiding hole 12 is arranged at one end of the fixed seat 3, and the sliding block 5 is slidingly arranged on the guiding hole 12.

[0034] The through hole 13 is arranged on one side of the outer tube 1, and the sliding block 5 extends into the outer tube 1 after passing through the through hole 13, so that the sliding block 5 can press the inner tube 2 inward.

[0035] The first rotating shaft 14 is arranged at one end of the fixed seat 3, and the first rotating hole 15 is arranged on the limiting column 6. The first rotating shaft 14 is rotationally connected with the first rotating hole 15, so that the rotating part 4 is rotationally arranged on the fixed seat 3.

[0036] The operating part 16 for operating the rotating part 4 is arranged at the other end of the rotating part 4, and the operating part 16 is a notch.

[0037] The limiting notch 21 is arranged on the fixed seat 3, and the rotating part 4 is clamped into the limiting notch 21 when it rotates in the first direction A, thereby limiting the rotating part 4.

[0038] The limiting part 20 is arranged on the fixed seat 3, and the limiting part 20 is inserted into the outer tube 1 downward. The inner tube 2 is abutted on the limiting part 20 on the other side. When the sliding block 5 presses the inner tube 2 inward, the inner tube 2 is pressed between the sliding block 5 and the limiting part 20, thereby positioning the inner tube 2 in front and back and left and right directions.

[0039] The fixed seat assembly further comprises the pressing locking part 17, which is rotationally arranged on the fixed seat 3. The locking shaft 18 is rotationally arranged on the pressing locking part 17, and the adjusting hole 19 is arranged on the other side of the inner tube 2. When the pressing locking part 17 is in the standby state, the locking shaft 18 is inserted into the adjusting hole 19 to lock the inner tube 2, thereby positioning the inner tube 2 in up and down and left and right directions. The locking shaft 18 adjusts the up and down positions of the inner tube 2 by being inserted into different adjusting holes 19. When the pressing locking part 17 is pressed, it rotates in the third direction C (the pressing direction is shown by the arrow), so that the locking shaft 18 is separated from the adjusting hole 19, thereby unlocking the inner tube 2. At this time, the rotating part 4 is rotated in the second direction B to make the sliding block 5 release the inner tube 2, so that the inner tube 2 can be adjusted in up and down directions. Figure 9

[0040] ​The other end of the fixed seat 3 is provided with a second rotating shaft 22, the pressing locking piece 17 is provided with a second rotating hole 23, the second rotating shaft 22 is rotationally connected with the second rotating hole 23, a torsion spring is sleeved on the second rotating shaft 22, the torsion spring is located between the pressing locking piece 17 and the fixed seat 3, when the pressing locking piece 17 is released, the pressing locking piece 17 rotates to reset to the standby state.

[0041] The locking shaft 18 is located at the upper end of the pressing locking piece 17, the lower end of the pressing locking piece 17 is provided with a pressing part 24, and the pressing locking piece 17 is pressed through the pressing part 24.

[0042] The fixed seat 3 is provided with a plug hole 25, the upper end of the outer tube 1 is plugged with the plug hole 25, and the inner tube 2 passes through the plug hole 25.

[0043] The upper end of the inner tube 2 is connected with a handle 26, the height of the handle 26 is adjusted when the inner tube 2 is up and down, the lower end of the outer tube is connected with a frame 27, and the frame 27 is provided with wheels 28 at the bottom.

[0044] The above is the preferred scheme of the utility model, the basic principle, the main features and the advantages of the utility model are displayed and described, the person skilled in the art should understand that the utility model is not limited by the above examples, the above examples and the description in the specification are just to illustrate the principle of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hand-operated tube fixing device for a walking aid, comprising an outer tube (1) and an inner tube (2) that is adjustable in height within the outer tube (1), characterized in that: It also includes a fixed base assembly, which includes a fixed base (3), a rotating part (4) and a slider (5). The fixed base (3) is disposed between the outer tube (1) and the inner tube (2). The rotating part (4) is rotatably disposed on the fixed base (3). The slider (5) is slidably disposed on the fixed base (3). When the rotating part (4) rotates in the first direction (A), it drives the slider (5) to press the inner tube (2) inward so that the inner tube (2) is fastened in the outer tube (1). When the rotating part (4) rotates in the second direction (B), the slider (5) releases the inner tube (2).

2. The hand-push tube fixing device for a walking aid according to claim 1, characterized in that: The rotating part (4) is provided with a limiting post (6), and the limiting post (6) is provided with a protruding limiting protrusion (7). When the rotating part (4) rotates in the first direction (A), the limiting protrusion (7) drives the slider (5) to press the inner tube (2) inward. When the rotating part (4) rotates in the second direction (B), the limiting protrusion (7) disengages from the slider (5) to release the inner tube (2).

3. The hand-push tube fixing device for a walking aid according to claim 2, characterized in that: The slider (5) has a first working arc surface (8) at one end and a second working arc surface (9) on one side of the inner tube (2). The slider (5) presses the inner tube (2) inward through the cooperation of the first working arc surface (8) and the second working arc surface (9).

4. The hand-push tube fixing device for a walking aid according to claim 3, characterized in that: The limiting protrusion (7) is provided with a third working arc surface (10), and the other end of the slider (5) is provided with a fourth working arc surface (11). The limiting protrusion (7) drives the slider (5) to press the inner tube (2) inward through the cooperation of the third working arc surface (10) and the fourth working arc surface (11).

5. The hand-push tube fixing device for a walking aid according to claim 1, characterized in that: The fixed base (3) is provided with a guide hole (12), and the slider (5) is slidably disposed on the guide hole (12).

6. The hand-push tube fixing device for a walking aid according to claim 1, characterized in that: A through hole (13) is provided on one side of the outer tube (1), and the slider (5) extends into the outer tube (1) after passing through the through hole (13).

7. The hand-push tube fixing device for a walking aid according to claim 2, characterized in that: A first rotating shaft (14) is provided on the fixed base (3), and a first rotating hole (15) is provided on the limiting post (6). The first rotating shaft (14) is rotatably connected to the first rotating hole (15) so that the rotating part (4) is rotatably mounted on the fixed base (3).

8. The hand-push tube fixing device for a walking aid according to claim 1, characterized in that: The rotating part (4) is provided with an operating part (16) for rotating the rotating part (4).

9. The hand-push tube fixing device for a walking aid according to claim 1, characterized in that: A limiting part (20) is provided on the fixed base (3). The limiting part (20) is inserted into the outer tube (1), and the other side of the inner tube (2) abuts against the limiting part (20).

10. The hand-push tube fixing device for a walking aid according to claim 1, characterized in that: The fixed base assembly also includes a pressing locking member (17), which is rotatably mounted on the fixed base (3). A locking shaft (18) is rotatably mounted on the pressing locking member (17), and an adjustment hole (19) distributed vertically is provided on the other side of the inner tube (2). When the pressing locking member (17) is in the waiting state, the locking shaft (18) is inserted into the adjustment hole (19) to lock the inner tube (2). When the pressing locking member (17) is pressed, it rotates in the third direction (C) to disengage the locking shaft (18) from the adjustment hole (19) and unlock the inner tube (2).

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