Air bag brake mechanism

Abstract

An air bag brake mechanism is characterized in that the air bag brake mechanism comprises an auxiliary brake mechanism (100) and a wheelchair structure (200), the auxiliary brake mechanism (100) is installed on the wheelchair structure (200) on the market, and then an air bag is manually controlled to control contact between the auxiliary brake mechanism (100) and the ground so as to control fixation or freedom of a wheelchair. Wherein the wheelchair structure (200) is provided for a common wheelchair which is not in the range of the patent but is only convenient to describe the auxiliary braking mechanism of the patent. The auxiliary braking mechanism has the advantages that the seat with the wheels is fixed through the auxiliary braking mechanism, and the seat is prevented from sliding; 2, a person does not need to bend down to fix a similar traditional brake wheel to fix the wheelchair, and the fixation or freedom of the wheelchair can be controlled only by manually controlling the air bag; 3, a pure mechanical structure is adopted, electric appliance auxiliary control is not needed, and performance is reliable and safe;

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of air bag brake mechanisms of furniture table and other related fields. BACKGROUND

[0002] Table and chair are indispensable furniture for human, since it is relatively heavy and inconvenient to move due to large size, so in order to move conveniently, it can be installed on the leg of the rolling caster, but the disadvantage is that it will move position by itself when it is not needed to move due to the caster, the traditional solution is to increase the brake function of the caster to achieve the purpose of braking, but it is inconvenient to operate the brake wheel when people sit on the chair, and secondly, the braking effect is limited due to the small contact area of the brake wheel. UTILITY MODEL CONTENTS

[0003] In view of the above problems, the utility model provides an air bag brake mechanism, which can well solve the above problems.

[0004] The air bag brake mechanism comprises Figure 1 3, 4, 5, 6, 7, characterized by: auxiliary brake mechanism (100), wheelchair structure (200), auxiliary brake mechanism (100) is installed on the wheelchair structure (200) on the market, and then the contact of auxiliary brake mechanism (100) with the ground is controlled by manually controlling the air bag to control the fixation or freedom of wheelchair, wherein the wheelchair structure (200) is a common wheelchair, which is not within the scope of this patent, but is given only for the convenience of describing the auxiliary brake mechanism of this patent.

[0005] Further

[0006] The air bag brake mechanism comprises Figure 1,3,4,5,6,7, the auxiliary brake mechanism (100) comprises: the upper fixed plate (101), the movable plate (102), the lower fixed plate (103), the brake plate (104), the non-slip pad (105), the strut (106), the locking bolt (107), the air bag (108), the air pipe (109), the manual air bag (110), the air bag valve (111), the air pipe cabin (112), the brake connecting shaft (113), the linear bearing (114), the reset spring (115), the connecting bolt (116), wherein the connection of each part is described: the upper fixed plate (101) and the lower fixed plate (103) are connected by the strut (106) with the locking bolt (107) to form a fixed cage, the movable plate (102) is sleeved on the strut (106) with the same diameter of the upper fixed plate (101) and the lower fixed plate (103), the air bag (108) is installed on the movable plate (102), the reset spring (115) is installed below the movable plate (102), the air pipe cabin (112) is welded to the movable plate (102) to form an integral structure, the linear bearing (114) is embedded on the lower fixed plate (103), the brake connecting shaft (113) and the brake plate (104) are fixed to the air pipe cabin (112) through the connecting bolt (116) passing through the linear bearing (114), and the movable plate (102), the air pipe cabin (112), the linear bearing (114), the brake plate (104), the non-slip pad (105) and the connecting bolt (116) are connected to form an integral structure, and the air bag (108) is connected to the manual air bag (110) through the air pipe (109) and the air bag valve (111).

[0007] Further

[0008] The said as Figure 6 ,7, after the manual air bag (110) ventilates the air bag (108) through the air bag valve (111) and the air pipe (109), the air bag (108) pushes the movable plate (102) to move downward, because the movable plate (102), the air pipe cabin (112), the linear bearing (114), the brake plate (104), the non-slip pad (105) and the connecting bolt (116) form an integral structure, therefore the non-slip pad (105) moves downward and is pressed to the ground to generate horizontal friction force to achieve the brake effect as Figure 7 shown, on the contrary, when the air bag valve (111) is opened, the movable plate (102) is pushed upward under the action of the reset spring (115) to drive the non-slip pad (105) to move upward and fall off the ground, and the friction force disappears.

[0009] Further

[0010] The said as Figure 1,2,6,7 wheelchair structure (200) characterized by including: wheelchair frame (201), seat connecting shaft (202), rolling caster (203), this part is only given a traditional chair leg structure for the convenience of explaining the brake, not the protection object of the patent.

[0011] The beneficial effects of the present application

[0012] 1. The auxiliary brake mechanism is used for fixing the wheel seat, so as to prevent the chair from sliding.

[0013] 2. A person does not need to bend down to fix the similar traditional brake wheel to fix the wheelchair, but only needs to control the air bag manually to control the fixing or freedom of the wheelchair.

[0014] 3. The pure mechanical structure does not need to be controlled by an electric appliance, and is reliable and safe in performance. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0016] Figure 1 . General assembly schematic diagram.

[0017] Figure 2 . Wheelchair structure schematic diagram.

[0018] Figure 3 . Auxiliary brake mechanism schematic Figure 1 .

[0019] Figure 4 . Auxiliary brake mechanism schematic Figure 2 .

[0020] Figure 5 . Ventilation system schematic diagram.

[0021] Figure 6 . Reset position cross-sectional view.

[0022] Figure 7 . Braking position cross-sectional view.

[0023] 100. Auxiliary brake mechanism.

[0024] 101. Upper fixed plate.

[0025] 102. Movable plate.

[0026] 103. Lower fixed plate.

[0027] 104. Brake plate.

[0028] 105. Non-slip mat.

[0029] 106. Support.

[0030] 107. Lock bolt.

[0031] 108. Air bag.

[0032] 109. Air tube.

[0033] 110. Manual inflation bag.

[0034] 111. Air bag valve.

[0035] 112. Air tube compartment.

[0036] 113. Brake connecting shaft.

[0037] 114. Linear bearing.

[0038] 115. Return spring.

[0039] 116. Connecting bolt.

[0040] 200. Wheelchair structure.

[0041] 201. Wheelchair frame.

[0042] 202. Seat connecting shaft.

[0043] 203. Rolling caster. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0045] The like Figure 1,3,4,5,6,7, the auxiliary brake mechanism (100) comprises: the upper fixed plate (101), the movable plate (102), the lower fixed plate (103), the brake plate (104), the non-slip pad (105), the support (106), the locking bolt (107), the air bag (108), the air pipe (109), the manual air bag (110), the air bag valve (111), the air pipe cabin (112), the brake connecting shaft (113), the linear bearing (114), the reset spring (115), the connecting bolt (116), wherein the connection of each part is described: the upper fixed plate (101) and the lower fixed plate (103) are connected by the support (106) to form a fixed cage by the locking bolt (107), the movable plate (102) is sleeved on the support (106) with the diameter of the upper fixed plate (101) and the lower fixed plate (103), the air bag (108) is installed on the movable plate (102), the reset spring (115) is installed below the movable plate (102), the air pipe cabin (112) is welded to the movable plate (102) to form an integral structure, the linear bearing (114) is embedded on the lower fixed plate (103), the brake connecting shaft (113) and the brake plate (104) are fixed to the air pipe cabin (112) by the connecting bolt (116) passing through the linear bearing (114), and the movable plate (102), the air pipe cabin (112), the linear bearing (114), the brake plate (104), the non-slip pad (105) and the connecting bolt (116) are connected to form an integral structure, and the air bag (108) is connected to the manual air bag (110) by the air pipe (109) and the air bag valve (111).

[0046] Further

[0047] The said as Figure 6 ,7, after the manual air bag (110) is ventilated to the air bag (108) through the air bag valve (111) and the air pipe (109), the air bag (108) pushes the movable plate (102) to move downward, because the movable plate (102), the air pipe cabin (112), the linear bearing (114), the brake plate (104), the non-slip pad (105) and the connecting bolt (116) form an integral structure, therefore the non-slip pad (105) moves downward and is pressed to the ground to generate horizontal friction force to achieve the braking effect as Figure 7 Conversely, when the air bag valve (111) is opened, the movable plate (102) is pushed to move upward under the action of the reset spring (115), so that the non-slip pad (105) is driven to move off the ground, and the friction force disappears.

[0048] As described above, by means of the above technical scheme of the utility model, the utility model has the following advantages:

[0049] 1. The auxiliary brake mechanism is used for fixing the wheel seat, so that the chair is prevented from sliding.

[0050] 2. The user does not need to bend down to fix the wheelchair like traditional brake wheels, but only needs to control the air bag manually to control the fixing or freedom of the wheelchair.

[0051] 3. The pure mechanical structure does not need electric auxiliary control, and the performance is reliable and safe.

[0052] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air bag brake mechanism, characterized by comprising: The upper fixed plate (101), the movable plate (102), the lower fixed plate (103), the brake plate (104), the non-slip pad (105), the support column (106), the locking bolt (107), the air bag (108), the air pipe (109), the manual air bag (110), the air bag valve (111), the air pipe cabin (112), the brake connecting shaft (113), the linear bearing (114), the reset spring (115), the connecting bolt (116), wherein the connection of each part is described: the upper fixed plate (101) and the lower fixed plate (103) are connected by the support column (106) with the locking bolt (107) to form a fixed cage, the movable plate (102) is sleeved on the support column (106) with the same diameter of the upper fixed plate (101) and the lower fixed plate (103), the air bag (108) is installed on the movable plate (102), the reset spring (115) is installed below the movable plate (102), the air pipe cabin (112) is welded to the movable plate (102) to form an integral structure, the linear bearing (114) is embedded on the lower fixed plate (103), the brake connecting shaft (113) and the brake plate (104) are fixed to the air pipe cabin (112) through the connecting bolt (116) passing through the linear bearing (114), and the movable plate (102), the air pipe cabin (112), the linear bearing (114), the brake plate (104), the non-slip pad (105) and the connecting bolt (116) are connected to form an integral structure which can move, and the air bag (108) is connected to the manual air bag (110) through the air pipe (109) and the air bag valve (111).

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