CN215521855U

CN215521855U - Downhill brake

Info

Publication number: CN215521855U
Application number: CN202122330982.9U
Authority: CN
Inventors: 夏鑫
Original assignee: Chengdu Guanwei Technology Co ltd
Current assignee: Chengdu Guanwei Technology Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-01-14
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a downhill brake, which comprises a driving shaft, a fixed disc arranged at the bottom end of the driving shaft and a one-way device support sleeved outside the driving shaft, wherein the fixed disc is arranged on the bottom end of the driving shaft; and the driving shaft and the isolator support are also provided with an anti-drag braking structure together. The application provides a downhill braking ware has improved the product structure for the belt can drive isolator support axial displacement when anti-dragging braking direction rotation of engine, and when rotating along normal operating direction, the rolling pin clutch idle running, thereby under the prerequisite that does not influence normal work, reach the CVT combination, realize anti-dragging braking.

Description

Downhill brake

Technical Field

The application relates to the field of automobile accessories, in particular to a downhill brake.

Background

The existing common CVT transmission is characterized in that a fixed support and a movable disc are unfolded by centrifugal force of a throwing block during rotation, so that a gap between the movable disc and a fixed disc is reduced, and a belt between the fixed disc and the movable disc is clamped. Through the matching between the spring force value and the centrifugal force of the throwing block, the requirements of disengaging (needing to disengage the driving force during gear shifting) and clamping when the rotating speed of the engine is increased are well met. Because the centrifugal force of the throwing block is used for clamping, the clamping force is sufficient when the rotating speed is high, and the operation is reliable.

However, because the CVT is disengaged when the engine is idling, when the vehicle is downhill or braked suddenly, because the engine speed is low (slightly above idle), the belt cannot be clamped effectively, and therefore, engine anti-drag braking cannot be achieved.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the application provides a downhill brake, which improves the product structure, so that a belt can drive a one-way device support to move axially when an engine performs reverse dragging braking, the belt is clamped together with a CVT movable disc, and a needle roller clutch idles when the belt rotates along the normal running direction, so that the CVT is combined and the reverse dragging braking is realized on the premise of not influencing the normal work.

A downhill brake comprises a driving shaft, a fixed disc arranged at the bottom end of the driving shaft, and a one-way device support sleeved outside the driving shaft; and the driving shaft and the isolator support are also provided with an anti-drag braking structure together.

Furthermore, the anti-drag brake structure is composed of a groove arranged on the driving shaft, a steel ball arranged in the groove and a spiral groove which is arranged on the isolator support and matched with the steel ball.

Preferably, the groove is provided on an outer side surface of the drive shaft, and the spiral groove is provided on an inner side wall of the isolator support.

Preferably, the number of the grooves is at least two, the grooves are evenly distributed on a concentric circle on the outer side wall of the driving shaft, and the number of the steel balls is the same as that of the grooves.

Preferably, the number of the spiral grooves is the same as that of the grooves, and the spiral grooves are arranged on the inner side wall of the isolator support and are matched with the grooves; the upper end and the lower end of the spiral groove respectively penetrate through the upper end part and the lower end part of the inner wall of the isolator support.

Compared with the prior art, the method has the following beneficial effects:

(1) the utility model is provided with the anti-dragging braking structure, and the steel ball is matched with the spiral groove, so that the isolator support has a better use effect, and the effect of carrying out the anti-dragging braking of the engine when the rotating speed of the engine is lower is realized.

(2) The utility model improves the product structure, so that the belt can drive the isolator support to move axially when the engine is braked in a reverse dragging way, the belt is clamped together with the CVT movable disc, and the needle roller clutch idles when the belt rotates along the normal running direction, thereby achieving the combination of the CVT and realizing the reverse dragging braking on the premise of not influencing the normal work.

Additional features of the present application will be set forth in part in the description which follows. Additional features of some aspects of the present application will be apparent to those of ordinary skill in the art in view of the following description and accompanying drawings, or in view of the production or operation of the embodiments. The features disclosed in this application may be realized and attained by practice or use of various methods, instrumentalities and combinations of the specific embodiments described below.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. Like reference symbols in the various drawings indicate like elements. Wherein the content of the first and second substances,

fig. 1 is an exploded view of the present invention.

Fig. 2 is a perspective view of the isolator mount of the present invention.

Description of reference numerals: 1. a drive shaft; 2. a isolator mount; 3. a groove; 4. steel balls; 5. fixing the disc; 6. a groove is embedded; 7. an embedding stage; 8. a helical groove.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, 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, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that if the terms "first", "second", etc. are used in the description and claims of this application and in the above-described drawings, they are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, if the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, if the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", etc. are referred to, their indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, in this application, the terms "mounted," "disposed," "provided," "connected," "sleeved," and the like should be construed broadly if they are referred to. For example, it may be a fixed connection, a removable connection, or a unitary construction; can 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 application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

As shown in fig. 1 and 2, a downhill brake comprises a driving shaft 1, a fixed disc 5 arranged at the bottom end of the driving shaft 1, and a one-way clutch support 2 sleeved outside the driving shaft 1; and the driving shaft 1 and the isolator support 2 are also provided with an anti-drag braking structure together.

The fixed disk 5 is penetrated from the middle shaft from bottom to top by the driving shaft 1.

The anti-drag brake structure consists of a groove 3 arranged on the driving shaft 1, a steel ball 4 arranged in the groove 3 and a spiral groove 8 which is arranged on the isolator support 2 and matched with the steel ball 4.

The groove 3 is provided on the outer side surface of the drive shaft 1, and the spiral groove 8 is provided on the inner side wall of the isolator mount 2.

The number of the grooves 3 is at least two, the grooves are evenly distributed on a concentric circle on the outer side wall of the driving shaft 1, and the number of the steel balls 4 is the same as that of the grooves 3.

The number of the spiral grooves 8 is the same as that of the grooves 3, and the spiral grooves are arranged on the inner side wall of the isolator support 2 at positions matched with the grooves 3; the upper end and the lower end of the spiral groove 8 respectively penetrate through the upper end and the lower end of the inner wall of the isolator support 2.

When the clutch is arranged, a roller pin clutch is arranged on the outer side of the isolator support, a belt is sleeved on the outer side of the roller pin clutch, and the movable disc is arranged on a first step and a second step of the driving shaft; when the belt clamping device is used, the belt can drive the isolator support to move axially when the engine is subjected to reverse dragging braking, the belt is clamped together with the CVT movable disc, and the needle roller clutch idles when the belt rotates in the normal operation direction, so that the CVT is combined on the premise of not influencing normal operation, and the reverse dragging braking is realized.

Example 2

The difference between this embodiment and embodiment 1 is that the bottom end of the isolator support 2 is provided with an annular embedding table 7, and the fixed disk 5 is provided with an embedding groove 6 matched with the embedding table 7.

The embedded groove can effectually cooperate the use with the embedding platform, after the isolator support downstream made the embedding platform get into the embedded groove, can effectually avoid the isolator support to take place to rock, fine assurance the stability of product use, improved the security of product use.

In addition, the above-described embodiments are exemplary, and those skilled in the art, having benefit of this disclosure, will appreciate numerous solutions that are within the scope of the disclosure and that fall within the scope of the utility model. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the utility model is defined by the claims and their equivalents.

Claims

1. A downhill brake is characterized by comprising a driving shaft (1), a fixed disc (5) arranged at the bottom end of the driving shaft (1), and a one-way device support (2) sleeved outside the driving shaft (1); and the driving shaft (1) and the isolator support (2) are also provided with an anti-dragging brake structure together.

2. A downhill brake according to claim 1, characterized in that the anti-drag braking structure consists of a groove (3) provided on the drive shaft (1), steel balls (4) provided in the groove (3), a spiral groove (8) provided on the isolator support (2) and cooperating with the steel balls (4), and a needle clutch provided outside the isolator support (2).

3. A downhill brake according to claim 2, characterized in that the groove (3) is provided on the outer side of the drive shaft (1) and the helical groove (8) is provided on the inner side wall of the isolator holder (2).

4. A downhill brake according to claim 3, characterized in that the number of grooves (3) is at least two and equally distributed on a concentric circle on the outer side wall of the drive shaft (1), and the number of steel balls (4) is the same as the number of grooves (3).

5. A downhill brake according to claim 4, characterized in that the number of said spiral grooves (8) is the same as the number of grooves (3) and is arranged on the inner side wall of the isolator support (2) at a position matching the grooves (3); the upper end and the lower end of the spiral groove (8) respectively penetrate through the upper end part and the lower end part of the inner wall of the isolator support (2).