Linkage type aviation dining car brake assembly

Abstract

The utility model relates to a linkage type aviation dining car brake assembly which comprises a bottom plate, bottom plate supporting frames are installed on the front side and the rear side of the bottom plate respectively, lower bases are installed on the left side and the right side of the bottom plate respectively, and trundle assemblies are installed on the front sides and the rear sides of the lower bases respectively. Brake pedal units are mounted at the bottom of the lower base between the two trundle assemblies, and the two brake pedal units are linked together through two braces. The two brake pedal units are linked together through the two pull strips, so that the requirement of bidirectional braking can be met, and the use experience feeling is good.

Description

Technical Field

[0001] The utility model relates to the technical field related to airline dining cars, and in particular to a linkage type airline dining car brake assembly. Background Art

[0002] Airline dining carts are used to deliver meals and sell goods to passengers. During air travel, customers need a compact, strong, and spacious food cart for dining. A brake assembly including a pedal is installed on the chassis of the airline dining cart to brake the dining cart.

[0003] After a massive search, it was found that the Chinese patent announcement number is CN218519698U, which discloses a railway food cart, including a cart body, a pedal is arranged at the bottom of the cart body, two limit columns and a limit pin are fixedly arranged at the bottom of the cart body, the two limit columns are symmetrically arranged with the limit pin as the center, and a spring top bead is also arranged at the bottom of the cart body; the pedal is also provided with two arc-shaped limit grooves for the two limit columns to be inserted, a central limit hole for the limit pin to pass through, and two conical holes corresponding to the spring top beads, the two limit columns can rotate back and forth along the two arc-shaped limit grooves with the limit pin as the center, and the spring top bead can be inserted into any one of the conical holes. The utility model allows the pedal to be stored when not in use, does not occupy extra space, and is not easy to cause damage to passing people and objects.

[0004] In summary, the existing food carts are generally only equipped with a brake assembly on one side, and when braking is needed, only one side can meet the braking demand.

[0005] In view of the above-mentioned defects, the designer actively conducts research and innovation in order to create a linkage type airline catering car brake assembly to make it more valuable for industrial use. Utility Model Content

[0006] In order to solve any of the above technical problems, the purpose of the utility model is to provide a linkage type airline catering car brake assembly.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A linkage type airline catering car brake assembly comprises a bottom plate, bottom plate support frames are installed on both the front and rear sides of the bottom plate, lower bases are installed on both the left and right sides of the bottom plate, and caster assemblies are installed on both the front and rear sides of the lower base;

[0009] A brake pedal unit is installed at the bottom of the lower base between the two caster assemblies, and the two brake pedal units are linked together through two tie bars;

[0010] The brake pedal unit includes a pedal mounting support, a first pedal, a second pedal, a brake disc and a pressure rod. The pedal mounting support is installed at the middle position of the bottom of the lower base. The first pedal and the second pedal are installed in sequence from back to front in the pedal mounting support. The middle parts of the first pedal and the second pedal are rotatably installed on the pedal mounting support through a rotating shaft. The inner sides of the first pedal and the second pedal are respectively connected to the upper pull bars distributed along the left and right directions through hooks. The outer sides of the two pull bars are respectively connected to the front and rear sides of the brake disc. Pressure blocks protruding downward are provided on the front and rear sides of the bottom of the brake disc. Pressure rods distributed along the front and rear directions are installed on the lower base directly below the pressure blocks.

[0011] The caster assembly includes a caster mounting seat and a caster. The caster is installed on the inner bottom of the caster mounting seat. A caster seat pressing hole is opened in the middle of the top of the caster mounting seat. A base pressing hole is opened on the lower base directly above the caster seat pressing hole. The base pressing hole is located directly below the pressure rod near the front and rear sides. A brake pad mounting rod distributed in the vertical direction is installed in the caster seat pressing hole. A brake pad is installed at the bottom of the brake pad mounting rod. The brake pad is located directly above the caster.

[0012] As a further improvement of the utility model, an upper cover plate covering the lower base is arranged above the brake rotary disc, and the brake rotary disc is rotatably mounted at the middle position of the bottom of the upper cover plate.

[0013] As a further improvement of the utility model, a plurality of pressure rod guide blocks for placing the pressure rods are evenly distributed along the front-to-back direction on the lower base.

[0014] As a further improvement of the utility model, a limiting plate is installed on the inner side of the pedal mounting support between the first pedal and the second pedal, and limiting retaining edges are arranged on the front and rear sides of the limiting plate. The limiting plate is connected to the first side of the first spring, and the second side of the first spring is connected to the outer side of the pedal mounting support.

[0015] As a further improvement of the utility model, a second spring is installed on the rotating shaft of the pedal mounting support, a first side of the second spring is connected to the outer side of the pedal mounting support, and a second side of the second spring is connected to the inner side of the second pedal.

[0016] As a further improvement of the utility model, a third spring is installed on the brake pad installation rod between the caster seat pressing through hole and the brake pad.

[0017] As a further improvement of the utility model, a plurality of friction teeth are arranged at the bottom of the brake pad.

[0018] By means of the above solution, the utility model has at least the following advantages:

[0019] The two brake pedal units of the utility model are linked together by two pull rods, so that the demand for bidirectional braking can be realized, and the user experience is good;

[0020] The utility model can brake by the first pedal, release the brake by the second pedal, and reset the two pedals, and the operation is simple and the use is convenient.

[0021] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a linkage type aviation dining car brake assembly of the utility model;

[0024] Figure 2 yes Figure 1 The structural diagram of the other side;

[0025] Figure 3 yes Figure 2 A partial enlarged structural diagram of the right side after removing the upper cover;

[0026] Figure 4 yes Figure 3 Schematic diagram of the structure after removing the lower base;

[0027] Figure 5 yes Figure 4 The structural diagram of the other side;

[0028] Figure 6 yes Figure 1 Schematic diagram of the internal structure of the middle caster assembly.

[0029] The meanings of the various reference numerals in the figures are as follows.

[0030] Base plate 1, base plate support frame 2, upper cover plate 3, caster assembly 4, lower base 5, brake pedal unit 6, pedal mounting support 7, first pedal 8, second pedal 9, brake turntable 10, pull rod 11, pressure rod 12, base pressing hole 13, pressure rod guide block 14, hook 15, pressure block 16, first spring 17, second spring 18, limit plate 19, limit retaining edge 20, caster mounting seat 21, caster 22, caster seat pressing hole 23, brake pad mounting rod 24, third spring 25, brake pad 26. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In order to make the technical personnel in the technical field better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but only represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0033] Example

[0034] like Figure 1 to Figure 6 As shown,

[0035] A linkage type airline catering car brake assembly comprises a base plate 1, base plate support frames 2 are installed on both the front and rear sides of the base plate 1, lower bases 5 are installed on both the left and right sides of the base plate 1, and caster assemblies 4 are installed on both the front and rear sides of the lower base 5.

[0036] A brake pedal unit 6 is installed at the bottom of the lower base 5 between the two caster assemblies 4 , and the two brake pedal units 6 are linked together via two tie bars 11 .

[0037] 1. The brake pedal unit 6 includes a pedal mounting support 7, a first pedal 8, a second pedal 9, a brake disc 10 and a pressure rod 12. The pedal mounting support 7 is installed at the middle position of the bottom of the lower base 5. The first pedal 8 and the second pedal 9 are installed in sequence from back to front in the pedal mounting support 7. The middle parts of the first pedal 8 and the second pedal 9 are rotatably installed on the pedal mounting support 7 through a rotating shaft. The inner sides of the first pedal 8 and the second pedal 9 are respectively connected to the upper and left-right direction The pull rod 11 is connected to the front and rear sides of the brake disc 10 through a hook 15, and the outer sides of the two pull rods 11 are respectively connected to the front and rear sides of the brake disc 10. The front and rear sides of the bottom of the brake disc 10 are provided with a pressure block 16 protruding downward, and the pressure rod 12 distributed along the front and rear direction is installed on the lower base 5 directly below the pressure block 16.

[0038] 1. An upper cover plate 3 covering the lower base 5 is arranged above the brake rotary disc 10 , and the brake rotary disc 10 is rotatably mounted at the bottom middle position of the upper cover plate 3 .

[0039] 2. A plurality of pressure rod guide blocks 14 for placing the pressure rods 12 are evenly distributed along the front-to-back direction on the lower base 5 .

[0040] 3. A limiting plate 19 is installed on the inner side of the pedal mounting bracket 7 between the first pedal 8 and the second pedal 9, and limiting retaining edges 20 are arranged on both the front and rear sides of the limiting plate 19. The limiting plate 19 is connected to the first side of the first spring 17, and the second side of the first spring 17 is connected to the outer side of the pedal mounting bracket 7. The two limiting retaining edges 20 are respectively located on the inner sides of the first pedal 8 and the second pedal 9, thereby limiting the first pedal 8 and the second pedal 9.

[0041] 4. A second spring 18 is installed on the rotating shaft of the pedal mounting support 7 , a first side of the second spring 18 is connected to the outer side of the pedal mounting support 7 , and a second side of the second spring 18 is connected to the inner side of the second pedal 9 .

[0042] 2. The caster assembly 4 includes a caster mounting seat 21 and a caster 22. The caster 22 is installed at the inner bottom of the caster mounting seat 21. A caster seat pressing hole 23 is opened in the middle of the top of the caster mounting seat 21. A base pressing hole 13 is opened on the lower base 5 directly above the caster seat pressing hole 23. The base pressing hole 13 is located directly below the pressure rod 12 near the front and rear sides. A brake pad mounting rod 24 distributed along the vertical direction is installed in the caster seat pressing hole 23. A brake pad 26 is installed at the bottom of the brake pad mounting rod 24. The brake pad 26 is located directly above the caster 22.

[0043] 1. A third spring 25 is installed on the brake pad installation rod 24 between the caster seat pressing through hole 23 and the brake pad 26.

[0044] 2. A plurality of friction teeth are arranged at the bottom of the brake pad 26 .

[0045] The working principle of this utility model is briefly described as follows:

[0046] When braking is required, by pressing the outer side of the first pedal 8, the pull bar 11 on the first pedal 8 drives the brake disc 10 to rotate, so that the pressure block 16 presses the lower pressure rod 12, and then the pressure rod 12 presses the lower brake pad mounting rod 24, so that the brake pad 26 contacts the lower caster 22, and then the braking process is completed. When the brake needs to be released, by pressing the outer side of the second pedal 9, the pull bar 11 on the second pedal 9 drives the brake disc 10 to rotate, so that the pressure block 16 releases the pressing process on the pressure rod 12, and then the brake pad 26 returns to the top of the caster 22 and does not contact it. At this time, due to the rotation of the brake disc 10 and the action of the pull bar 11, the first pedal 8 returns to its original state, and after pressing the second pedal 9, under the action of the second spring 18, the second pedal 9 also returns to its original state.

[0047] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0048] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A linkage type airline catering car brake assembly, comprising a base plate (1), base plate support frames (2) are installed on both the front and rear sides of the base plate (1), lower bases (5) are installed on both the left and right sides of the base plate (1), and caster assemblies (4) are installed on both the front and rear sides of the lower base (5); Features: A brake pedal unit (6) is installed at the bottom of the lower base (5) between the two caster assemblies (4), and the two brake pedal units (6) are linked together via two tie bars (11); The brake pedal unit (6) comprises a pedal mounting support (7), a first pedal (8), a second pedal (9), a brake disc (10) and a pressure rod (12). The pedal mounting support (7) is mounted at the middle position of the bottom of the lower base (5). The first pedal (8) and the second pedal (9) are sequentially mounted in the pedal mounting support (7) from back to front. The middle parts of the first pedal (8) and the second pedal (9) are rotatably mounted on the pedal mounting support (7) through a rotating shaft. The inner sides of the first pedal (8) and the second pedal (9) are respectively connected to the upper pull rod (11) distributed along the left and right directions through hooks (15). The outer sides of the two pull rods (11) are respectively connected to the front and rear sides of the brake disc (10). Pressure blocks (16) protruding downward are arranged on the front and rear sides of the bottom of the brake disc (10). A pressure rod (12) distributed along the front and rear directions is installed on the lower base (5) directly below the pressure block (16). The caster assembly (4) comprises a caster mounting seat (21) and a caster (22); the caster (22) is mounted on the inner bottom of the caster mounting seat (21); a caster seat pressing through hole (23) is provided in the middle of the top of the caster mounting seat (21); a base pressing through hole (13) is provided on the lower base (5) directly above the caster seat pressing through hole (23); the base pressing through hole (13) is located directly below the pressure rod (12) near the front and rear sides; a brake pad mounting rod (24) distributed along the vertical direction is mounted in the caster seat pressing through hole (23); a brake pad (26) is mounted at the bottom of the brake pad mounting rod (24); and the brake pad (26) is located directly above the caster (22).

2. A linkage type airline catering car brake assembly as claimed in claim 1, characterized in that: An upper cover plate (3) covering the lower base (5) is arranged above the brake rotary disc (10), and the brake rotary disc (10) is rotatably mounted at the middle position of the bottom of the upper cover plate (3).

3. The linkage type airline catering car brake assembly according to claim 1, characterized in that: A plurality of pressure rod guide blocks (14) for placing pressure rods (12) are evenly distributed on the lower base (5) along the front-to-back direction.

4. The linkage type airline catering car brake assembly according to claim 1, characterized in that: A limit plate (19) is installed on the inner side of a pedal mounting support (7) between the first pedal (8) and the second pedal (9), and limit retaining edges (20) are arranged on both the front and rear sides of the limit plate (19), the limit plate (19) is connected to the first side of the first spring (17), and the second side of the first spring (17) is connected to the outer side of the pedal mounting support (7).

5. The linkage type airline catering car brake assembly according to claim 1, characterized in that: A second spring (18) is mounted on the rotating shaft of the pedal mounting support (7), a first side of the second spring (18) is connected to the outer side of the pedal mounting support (7), and a second side of the second spring (18) is connected to the inner side of the second pedal (9).

6. The linkage type airline catering car brake assembly according to claim 1, characterized in that: A third spring (25) is installed on the brake pad installation rod (24) between the caster seat pressing through hole (23) and the brake pad (26).

7. The linkage type airline catering car brake assembly according to claim 1, characterized in that: A plurality of friction teeth are arranged at the bottom of the brake pad (26).

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