CN219969921U

CN219969921U - Linkage brake device

Info

Publication number: CN219969921U
Application number: CN202320600231.0U
Authority: CN
Inventors: 张锋
Original assignee: Hefei Pinecone Zhizao Intelligent Technology Co ltd
Current assignee: Hefei Pinecone Zhizao Intelligent Technology Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-11-07
Anticipated expiration: 2033-03-22

Abstract

The utility model relates to the technical field of braking devices, in particular to a linkage braking device which comprises a connecting component, a linkage component, a first braking wire and a second braking wire; the linkage assembly comprises a fixed shell, a chain wheel arranged in the fixed shell and a chain penetrating through the chain wheel, wherein two ends of the connecting assembly are respectively connected with the fixed shell and a first brake wire leading to a brake lever, and two ends of the chain extend out of the fixed shell and are respectively connected with a second brake wire for front wheel braking and rear wheel braking. When the brake lever is independently operated or simultaneously operated, the first brake cable can simultaneously drive the second brake cable for front wheel braking and the second brake cable for rear wheel braking, so that the front wheel and the rear wheel can obtain uniform braking force, the aim of simultaneously braking and one brake for two stops is fulfilled, the running stability is improved, and the situation that the braking distance is prolonged or the direction is unstable is avoided.

Description

Linkage brake device

[ field of technology ]

The utility model relates to the technical field of braking devices, in particular to a linkage braking device.

[ background Art ]

Along with the low-carbon and environment-friendly green travel concept, people are gradually deepened, and more people choose to travel in a bicycle riding or electric bicycle riding mode.

The existing bicycle or electric vehicle is generally a single brake device, namely two brake handles of the bicycle or electric vehicle respectively control a corresponding wheel to brake, and if the front wheel and the rear wheel are required to be braked simultaneously, the two brake handles are required to be operated simultaneously. But when emergency braking is needed, the existing single braking device is utilized for braking, uniform braking force cannot be obtained, the braking distance is easily prolonged or the direction is unstable, and the risk of traffic accidents is increased.

[ utility model ]

The utility model provides a linkage brake device, which aims to solve the problems that the existing single brake device can not obtain uniform brake force and the brake distance is prolonged or the direction is unstable easily when used for emergency braking.

The technical problem to be solved by the utility model is to provide a linkage brake device, which comprises a connecting component, a linkage component, a first brake cable and a second brake cable;

the linkage assembly comprises a fixed shell, a chain wheel arranged in the fixed shell and a chain penetrating through the chain wheel, two ends of the connecting assembly are respectively connected with the fixed shell and the first brake wire leading to the brake lever, and two ends of the chain extend out of the fixed shell and are respectively connected with the second brake wire for front wheel braking and rear wheel braking.

Preferably, a fixing piece penetrating through the fixing shell is arranged on the fixing shell, and the chain wheel is sleeved on the fixing piece.

Preferably, the connecting assembly comprises a connecting piece and a limiting piece connected with the first brake cable, and two ends of the connecting piece are respectively connected with the fixed shell and the limiting piece.

Preferably, a sliding groove is formed in the fixed shell, and the connecting piece slides in the sliding groove.

Preferably, one end of the sliding groove penetrates the fixing case at one side adjacent to the sliding groove, and the connecting piece moves along the sliding groove penetrating one end of the fixing case so as to be separated from the fixing case.

Preferably, the limiting part is provided with two limiting grooves, the first brake cable is provided with a fixed block, and one end of the fixed block penetrates through the limiting grooves and is exposed out of the limiting part.

Preferably, the limiting pieces are respectively provided with limiting blocks corresponding to the notch of the two limiting grooves.

Preferably, the limiting part is further provided with two limiting holes, and the limiting part enters the limiting holes and is separated from the limiting holes through corresponding orifices of the limiting holes.

Preferably, the linkage brake device further comprises a first shell and a second shell, wherein the first shell covers the second shell to form an accommodating space, and the accommodating space accommodates the connecting component and the linkage component.

Preferably, a positioning block is arranged on one side, close to the second shell, of the first shell, a positioning groove is formed in one side, close to the first shell, of the second shell, and corresponds to the position of the positioning block, and when the first shell covers the second shell, the positioning block penetrates into the positioning groove.

Compared with the prior art, the linkage brake device has the following advantages:

1. the utility model relates to a linkage brake device which comprises a connecting component, a linkage component, a first brake cable and a second brake cable, wherein the connecting component is connected with the first brake cable; the linkage assembly comprises a fixed shell, a chain wheel arranged in the fixed shell and a chain penetrating through the chain wheel, wherein two ends of the connecting assembly are respectively connected with the fixed shell and a first brake wire leading to a brake lever, and two ends of the chain extend out of the fixed shell and are respectively connected with a second brake wire for front wheel braking and rear wheel braking. Through set up the chain of wearing to establish on the sprocket in the linkage subassembly, make the both ends of chain connect the second brake line that is used for front wheel brake and the second brake line that is used for the rear wheel brake respectively to improve the stability that will be used for the second brake line of front wheel brake and the second brake line that is used for the rear wheel brake are connected. And through the fixed shell that coupling assembling's both ends are connected respectively and the first brake cable that leads to the brake lever, when having realized alone operation or simultaneous operation brake lever, homoenergetic drives the linkage subassembly motion simultaneously through first brake cable to drive the second brake cable that is used for front wheel brake and the second brake cable that is used for rear wheel brake and move simultaneously, make front and rear wheels homoenergetic obtain even braking force, reach the simultaneous braking, the purpose of stopping two stops of a brake has improved the stationarity of driving, avoid appearing the circumstances that the brake distance is prolonged or the direction is unstable.

2. The fixing shell is provided with a fixing piece penetrating through the fixing shell, and the chain wheel is sleeved on the fixing piece. The sprocket is sleeved on the fixing piece penetrating through the fixing shell, so that the sprocket is firmly fixed inside the fixing shell, the fixing effect of the sprocket is improved, and the stability of connection of the second brake cable for front wheel braking and the second brake cable for rear wheel braking is improved.

3. The fixed shell is provided with the sliding groove, and the connecting piece slides in the sliding groove. Through being provided with the sliding tray on the fixed shell, realized the sliding connection of connecting piece and sliding tray, make the coupling assembling more nimble with the coupling assembling's of linkage.

4. One end of the sliding groove penetrates through the fixed shell at one side adjacent to the sliding groove, and the connecting piece moves along one end of the sliding groove penetrating through the fixed shell so as to be separated from the fixed shell. Through setting up the one end of sliding tray run through with the fixed shell of the adjacent one side of sliding tray to when maintaining or overhauling linkage brake equipment, the connecting piece can be followed the one end that the sliding tray run through the fixed shell and slided, thereby breaks away from the fixed shell, has realized quick dismantlement, makes the dismantlement work simpler and more convenient.

5. The limiting piece is provided with two limiting grooves, the first brake cable is provided with a fixed block, and one end of the first brake cable, which is provided with the fixed block, penetrates through the limiting grooves and is exposed out of the limiting piece. Through setting up the fixed block on first brake cable, when braking first brake cable, the fixed block can the butt locating part be close to one side of fixed shell. Therefore, when the brake is braked, the first brake cable is prevented from being separated from the limiting piece, and the stability of connection between the first brake cable and the limiting piece is improved.

6. Limiting blocks are respectively arranged on the limiting piece corresponding to the two limiting groove openings. Through setting up the stopper, can prevent that first brake cable from breaking away from in the spacing groove.

7. The limiting piece is also provided with two limiting holes, and the limiting piece enters the limiting holes and is separated from the limiting holes through the orifices of the corresponding limiting holes. Through setting up the drill way pull through the spacing hole that corresponds to get into spacing hole and break away from spacing hole to when spacing piece breaks away from spacing hole, be favorable to taking out first brake cable from the spacing groove fast, be convenient for quick replacement or overhaul first brake cable.

8. The linkage brake device also comprises a first shell and a second shell, wherein the first shell is covered on the second shell to form an accommodating space, and the accommodating space accommodates the connecting component and the linkage component. Through setting up first casing lid and closing in the accommodation space that the second casing formed in order to hold coupling assembling and linkage subassembly to the protection is at coupling assembling and linkage subassembly of accommodation space, avoids the external interference to brake braking.

9. A positioning block is arranged on one side, close to the second shell, of the first shell, and a positioning groove is formed in the second shell, close to one side of the first shell, and corresponds to the positioning block in position, and when the first shell covers the second shell, the positioning block penetrates into the positioning hole. Through setting up at locating piece and locating hole cooperation, can improve first casing and second casing lid and close fixed effect. In addition, when the cover is closed, the positioning block can support the first shell and the second shell, so that the first shell and the second shell are prevented from being deformed by external force, and the linkage assembly and the connecting assembly are prevented from being extruded.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a linkage brake device according to a first embodiment of the present utility model.

Fig. 2 is a schematic view of a portion of a linkage brake device according to a first embodiment of the present utility model.

FIG. 3 is a front view of a first embodiment of a retainer for a linked brake assembly according to the present utility model.

Fig. 4 is a schematic diagram of a portion of a linkage brake device according to a first embodiment of the present utility model.

Fig. 5 is a schematic view of a portion of a linkage brake apparatus according to a third embodiment of the present utility model.

Fig. 6 is an exploded view of a linkage brake device according to a first embodiment of the present utility model.

The attached drawings are used for identifying and describing:

1. a linkage brake device;

11. a connection assembly; 12. a linkage assembly; 13. a first brake cable; 14. a second brake cable; 15. a first housing; 16. a second housing;

111. a connecting piece; 112. a limiting piece; 121. a fixed case; 122. a sprocket; 123. a chain; 124. a fixing member; 131. a fixed block; 151. a groove; 152. a positioning block; 161. a protrusion; 162. a positioning groove;

1111. a connector; 1112. a connecting wire; 1121. a limit groove; 1122. a limiting block; 1123. a limiting hole; 1211. a sliding groove; 1241. a first fixing member; 1242. and a second fixing member.

[ detailed description ] of the utility model

The present utility model will be described in further detail with reference to the accompanying drawings and examples of implementation in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 and 2, a first embodiment of the present utility model provides a linkage brake device 1, which includes a connection assembly 11, a linkage assembly 12, a first brake cable 13 and a second brake cable 14; the linkage assembly 12 comprises a fixed shell 121, a chain wheel 122 arranged in the fixed shell 121 and a chain 123 penetrating through the chain wheel 122, wherein two ends of the connecting assembly 11 are respectively connected with the fixed shell 121 and a first brake cable 13 leading to a brake lever, and two ends of the chain 123 extend out of the fixed shell 121 and are respectively connected with a second brake cable 14 for front wheel braking and rear wheel braking.

It will be appreciated that a chain 123 penetrating the sprocket 122 may be provided in the linkage assembly 12 such that both ends of the chain 123 are respectively connected to the second brake cable 14 for front wheel braking and the second brake cable 14 for rear wheel braking, such that the second brake cable 14 for front wheel braking and the second brake cable 14 for rear wheel braking are coupled together by the chain 123. Therefore, when the two ends of the connecting component 11 are respectively connected with the fixed shell 121 and the first brake cable 13 leading to the brake lever, the first brake cable 13 is simultaneously connected with the second brake cable 14 for front wheel braking and the second brake cable 14 for rear wheel braking, so that when the brake lever is controlled to perform braking action, the first brake cable 13 can simultaneously drive the linkage component 12 to move, thereby driving the second brake cable 14 for front wheel braking and the second brake cable 14 for rear wheel braking to simultaneously move, leading the front wheel and the rear wheel to obtain uniform braking force, achieving the purposes of simultaneous braking and double braking, improving the stability of running, and avoiding the situation of prolonged braking distance or unstable direction.

It should be noted that, a first brake cable 13 is correspondingly connected to a brake lever, and in this embodiment, two first brake cables 13 may be correspondingly connected to two brake levers. The brake lever can be independently operated or simultaneously operated at random, the purposes of simultaneous braking and one-brake-two-stop can be achieved, and the flexibility of braking is improved.

It is understood that connecting the second brake cable 14 for front wheel braking and the second brake cable 14 for rear wheel braking by the chain 123 can improve the stability of connecting the second brake cable 14 for front wheel braking and the second brake cable 14 for rear wheel braking. And the chain 123 can be disassembled and reconnected to facilitate maintenance and replacement of the components. Meanwhile, the length and width of the chain 123 can be adjusted as required to be suitable for different application scenes.

As can be appreciated, when the sprocket 122 is threaded on the sprocket 122 and both ends of the sprocket 122 extend to be connected to the second brake cable 14 for front wheel braking and the second brake cable 14 for rear wheel braking, respectively, the distance between the second brake cable 14 for front wheel braking and the second brake cable 14 for rear wheel braking is the same as the diameter of the outer ring of the sprocket 122. Therefore, the distance between the second brake cable 14 for front wheel braking and the second brake cable 14 for rear wheel braking can be controlled by adopting the chain wheels 122 with different diameters, so that the situation that the layout of the brake pipelines is crowded, the operation is inconvenient and the failure rate is increased is avoided.

It should be noted that, the chain 123 and the sprocket 122 may be made of metal, so that they can bear greater force and weight, have longer service life, and improve durability.

Referring to fig. 2 and 3, further, a fixing member 124 penetrating the fixing housing 121 is disposed on the fixing housing 121, and the sprocket 122 is sleeved on the fixing member 124.

It is understood that the fixing member 124 may penetrate the fixing case 121 and be fixedly coupled to the fixing case 121 through both ends of the fixing member 124. Therefore, the middle area of the fixing member 124 is located inside the fixing case 121, the sprocket 122 can be sleeved on the middle area of the fixing member 124, and the diameter of the inner ring of the sprocket 122 can be the same as that of the middle area of the fixing member 124, so that the sprocket 122 can be sleeved on the fixing member 124 more stably. And further firmly fix the sprocket 122 in the fixing housing 121, thereby improving the fixing effect of the sprocket 122 and improving the connection stability of the second brake cable 14 for front wheel brake and the second brake cable 14 for rear wheel brake

Alternatively, the dimensions of the two ends of the fixing member 124 may be greater than the dimensions of the middle region, and the diameter of the through hole of the fixing member 124 on the fixing housing 121 may be greater than or equal to the dimensions of the middle region and less than the dimensions of the two ends of the fixing member 124, and the two ends of the fixing member 124 may be exposed out of the fixing housing 121, and the middle region of the fixing member 124 abuts against the through hole of the fixing housing 121, which is penetrated by the fixing member 124, so as to firmly fix the fixing member 124 on the fixing housing 121.

Optionally, the fixing member 124 may include a first fixing member 1241 and a second fixing member 1242, where the connection between the first fixing member 1241 and the second fixing member 1242 is a detachable connection, and in particular, the detachable connection may be implemented by a pull connection or a threaded connection. The quick disassembly is facilitated, and the maintenance and the repair of the linkage brake device 1 are facilitated. And the first fixing piece 1241 and the second fixing piece 1242 each comprise a connecting end and a fixing end, and the size of the fixing end is larger than that of the connecting end. Thus, when the first fixing member 1241 and the second fixing member 1242 are connected and fixed on the fixing case 121, the connection area formed by connecting the first fixing member 1241 and the second fixing member 1242 through the connection end is the sleeved area of the sprocket 122. The region abuts against a through hole in the fixing case 121 penetrated by the first fixing member 1241 and the second fixing member 1242, and fixing ends of the first fixing member 1241 and the second fixing member 1242 are exposed out of the fixing case.

Referring to fig. 4, further, the connecting assembly 11 includes a connecting member 111 and a limiting member 112 connected to the first brake cable 13, and two ends of the connecting member 111 are respectively connected to the fixing housing 121 and the limiting member 112.

It can be appreciated that the limiting member 112 is connected to the first brake cable 13, and two ends of the connecting member 111 are respectively connected to the fixing housing 121 and the limiting member 112, so that the connection between the connecting assembly 11 and the linkage assembly 12 is realized, and further, the first brake cable 13 is simultaneously connected to the second brake cable 14 for front wheel braking and the second brake cable 14 for rear wheel braking.

Referring to fig. 5, further, a sliding groove 1211 is provided on the fixing case 121, and the connection member 111 slides in the sliding groove 1211.

It can be appreciated that by providing the sliding groove 1211 such that the connector 111 slides within the sliding groove 1211, a sliding connection of the sliding groove 1211 is achieved, making the connection of the connection assembly 11 to the linkage assembly 12 more flexible.

Specifically, the connector 111 is provided with a connector 1111 and a connection wire 1112 connected to the connector 1111, the connector 1111 has a size larger than the connection wire 1112, and the slide slot 1211 has a slot size larger than or equal to the connection wire 1112 and smaller than the connection wire 1111. When the connector 111 is slidably connected to the slide groove 1211, the groove wall of the slide groove 1211 abuts against the connection wire 1112, and the connector 1111 abuts against the inner wall of the fixing case 121. Thereby improving the stability of the sliding connection of the connection member 111 with the slide groove 1211.

With continued reference to fig. 5, further, one end of the sliding groove 1211 penetrates the fixing case 121 adjacent to the sliding groove 1211, and the connecting piece 111 moves along the sliding groove 1211 through one end of the fixing case 121 to be separated from the fixing case 121.

It can be understood that one end of the sliding groove 1211 penetrates the fixing case 121 adjacent to the sliding groove 1211, that is, one end of the sliding groove 1211 penetrating the fixing case 121 is communicated with the outside, and the connection member 111 can slide along the one end of the sliding groove 1211 penetrating the fixing case 121 and directly separate from the sliding groove 1211 after sliding to the port of the one end of the sliding groove 1211 penetrating the fixing case 121, thereby separating from the fixing case 121. Thereby realizing the sliding detachable connection of the connection member 111 with the slide groove 1211. The quick disassembly is convenient, so that the disassembly work is simpler and more convenient, and the speed of maintaining or overhauling the linkage brake device 1 is facilitated.

Referring to fig. 4 and 5, further, two limiting grooves 1121 are formed in the limiting member 112, a fixing block 131 is disposed on the first brake cable 13, and one end of the fixing block 131 disposed on the first brake cable 13 passes through the limiting groove 1121 and is exposed out of the limiting member 112.

It will be appreciated that two first brake cables 13 may be provided, to which two brake levers are connected. Therefore, two limiting grooves 1121 can be formed in the limiting member 112, and fixing blocks 131 are correspondingly formed in the two first brake cables 13, so that one end of the first brake cables 13 provided with the fixing blocks 131 passes through the limiting grooves 1121 and is exposed out of the limiting member 112, i.e., the fixing blocks 131 are located at one side of the limiting member 112 close to the linkage assembly 12, and when the first brake cables 13 are braked, the fixing blocks 131 can be abutted against the limiting member 112. Thereby preventing the first brake cable 13 from being separated from the limiting piece 112 during braking, and improving the stability of the connection between the first brake cable 13 and the limiting piece 112.

Referring to fig. 4 and 5, further, the limiting members 112 are provided with limiting blocks 1122 corresponding to the notches of the two limiting grooves 1121.

It can be appreciated that the limiting blocks 1122 can be respectively disposed on the limiting member 112 corresponding to the notch of the two limiting grooves 1121, that is, one limiting block 1122 can be disposed on the notch of one limiting groove 1121 to close the notch of the limiting groove 1121, thereby limiting the first brake cable 13 in the limiting groove 1121 and preventing the first brake cable 13 from being separated from the limiting groove 1121.

With reference to fig. 4 and 5, further, two limiting holes 1123 are further provided on the limiting member 112, and the limiting member 112 enters the limiting hole 1123 through the corresponding orifice of the limiting hole 1123 and leaves the limiting hole 1123.

It is understood that two limiting holes 1123 may be provided on the limiting member 112, and the positions of the limiting holes 1123 may correspond to the positions of the notches of the corresponding limiting grooves 1121. One end of the limiting block 1122 can enter the limiting hole 1123 from the corresponding orifice of the limiting hole 1123, and the other end of the limiting block 1122 seals the notch of the limiting groove 1121. And the limiting block 1122 can be pulled out from the corresponding limiting hole 1123, so that the limiting block 1122 is separated from the limiting hole 1123. The first brake cable 13 is quickly taken out of the limiting groove 1121, and the linkage brake device 1 is convenient to quickly replace or overhaul.

Referring to fig. 2 and 6, further, the linkage brake device 1 further includes a first housing 15 and a second housing 16, where the first housing 15 covers the second housing 16 to form an accommodating space, and the accommodating space accommodates the connecting assembly 11 and the linkage assembly 12.

It can be appreciated that the first housing 15 covers the second housing 16 to form a receiving space therein, and the receiving space can receive the connection assembly 11 and the linkage assembly 12 and a portion of the first brake cable 13 and a portion of the second brake cable 14, thereby protecting the connection assembly 11 and the linkage assembly 12 in the receiving space from external interference to braking.

It will be appreciated that the first housing 15 is provided with a recess 151 at its upper boundary and the second housing 16 is provided with a projection 161 at its upper boundary, the projection 161 matching the recess 151. When the first housing 15 is covered on the second housing 16, the protrusion 161 enters the groove 151, so as to improve the covering effect of the first housing 15 on the second housing 16. It will be appreciated that the positions of the protrusions 161 and the grooves 151 may be interchanged to achieve the closing between the first housing 15 and the second housing 16.

Referring to fig. 2 and 6, further, a positioning block 152 is disposed on a side of the first housing 15 close to the second housing 16, a positioning slot 162 is disposed on a side of the second housing 16 close to the first housing 15 and corresponding to the positioning block 152, and when the first housing 15 covers the second housing 16, the positioning block 152 penetrates into the positioning slot 162.

It will be appreciated that the size of the positioning slot 162 may be matched to the size of the positioning block 152. In the present embodiment, the size of the positionable slot 162 may be the same as the size of the positioning block 152. Therefore, when the first housing 15 covers the second housing 16, the positioning block 152 is matched with the positioning hole, that is, the positioning block 152 penetrates into the positioning groove 162 and abuts against the bottom of the positioning groove 162, so that the covering and fixing effect of the first housing 15 and the second housing 16 can be improved. It should be understood that the positioning slots 162 and the positioning blocks 152 may be interchanged to achieve the closing between the first housing 15 and the second housing 16.

It will be appreciated that the positioning grooves 162 and the positioning blocks 152 may be disposed in the middle areas of the first housing 15 and the second housing 16, so that after the first housing 15 covers the second housing 16, the positioning blocks 152 can support the middle areas of the first housing 15 and the second housing 16, so as to avoid the external force applied to the first housing 15 and the second housing 16 from deforming the middle areas of the first housing 15 and the second housing 16, and cause the compression of the linkage assembly 12 and the connection assembly 11.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements, etc. within the principles of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a linkage brake equipment which characterized in that: the brake cable comprises a connecting assembly, a linkage assembly, a first brake cable and a second brake cable;

2. The linkage brake apparatus of claim 1, wherein: the fixed shell is provided with a fixed piece penetrating through the fixed shell, and the chain wheel is sleeved on the fixed piece.

3. The linkage brake apparatus of claim 1, wherein: the connecting assembly comprises a connecting piece and a limiting piece connected with the first brake cable, and two ends of the connecting piece are respectively connected with the fixed shell and the limiting piece.

4. A linked brake apparatus as defined in claim 3, wherein: the fixed shell is provided with a sliding groove, and the connecting piece slides in the sliding groove.

5. The linkage brake apparatus of claim 4, wherein: one end of the sliding groove penetrates through the fixed shell on one side adjacent to the sliding groove, and the connecting piece moves along one end of the sliding groove penetrating through the fixed shell so as to be separated from the fixed shell.

6. A linked brake apparatus as defined in claim 3, wherein: the limiting part is provided with two limiting grooves, the first brake cable is provided with a fixed block, and one end of the fixed block penetrates through the limiting grooves and is exposed out of the limiting part.

7. The linkage brake apparatus of claim 6, wherein: limiting blocks are respectively arranged on the notch of the limiting piece, corresponding to the two limiting grooves.

8. The linkage brake apparatus of claim 7, wherein: the limiting piece is further provided with two limiting holes, and the limiting piece enters the limiting holes and is separated from the limiting holes through corresponding orifices of the limiting holes.

9. The linkage brake apparatus of claim 1, wherein: the linkage brake device further comprises a first shell and a second shell, wherein the first shell covers the second shell to form an accommodating space, and the accommodating space accommodates the connecting component and the linkage component.

10. The linkage brake apparatus of claim 9, wherein: the positioning device comprises a first shell, a second shell and a positioning block, wherein the first shell is arranged on one side, close to the second shell, of the first shell, a positioning groove is formed in the second shell, the positioning block is arranged on one side, close to the first shell, of the second shell, and corresponds to the position of the positioning block, and when the first shell covers the second shell, the positioning block penetrates into the positioning groove.