CN219161423U

CN219161423U - Vehicle load sensor and electric vehicle

Info

Publication number: CN219161423U
Application number: CN202223602289.3U
Authority: CN
Inventors: 李彦甲; 许连威; 石建军; 郑远文
Original assignee: Beijing Qisheng Technology Co Ltd
Current assignee: Beijing Qisheng Technology Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-09
Anticipated expiration: 2032-12-30

Abstract

The application discloses vehicle load sensor and electric motor car, this vehicle load sensor seals the detection port through detecting the end cover, and the connecting portion that detects the end cover and be used for connecting location portion and fixed part has radial direction's flexible volume, this flexible volume can make the flexible motion of detection end that detects end cover cooperation location portion along with detecting the port salient, thereby the closed detection port that can be fine under the condition that does not influence vehicle load sensor's load and detect, prevent that silt, dust etc. from detecting the inside that port got into vehicle load sensor, the detection port of having solved load sensor from entering silt easily and the technical problem of jam or inefficacy that leads to.

Description

Vehicle load sensor and electric vehicle

Technical Field

The utility model relates to the technical field of electric vehicles, in particular to a vehicle load sensor and an electric vehicle.

Background

Overload phenomenon easily occurs in the riding process of the electric vehicle, and serious potential safety hazards exist.

In order to find out an overload or remind the overload in time, a load sensor is usually installed on an electric vehicle to detect the load of the vehicle, for example, the load sensor can detect the load by utilizing the hall effect.

However, the detection end of the load sensor in the related art has a risk of entering silt due to the opening, thereby causing jamming or failure inside the load sensor.

Disclosure of Invention

According to at least one aspect of the technical problem, the embodiment of the application provides a vehicle load sensor and an electric vehicle, the vehicle load sensor seals a detection port through a detection end cover, the detection end cover is used for connecting a positioning part and a connecting part of a fixing part to have a radial expansion amount, the expansion amount can enable the detection end cover to cooperate with the positioning part to carry out expansion movement of a detection end protruding along with the detection port, so that the detection port can be well sealed under the condition that the load detection of the vehicle load sensor is not affected, sediment, dust and the like are prevented from entering the inside of the vehicle load sensor from the detection port, and the technical problem that the detection port of the load sensor is blocked or invalid due to the fact that the sediment is easy to enter through an opening is solved.

An embodiment of the present application provides a vehicle load sensor, including:

a sensor housing having a detection port opened with respect to a first direction;

the load detection piece is arranged in the sensor shell, a detection end head of the load detection piece is exposed out of the detection port, and the load detection piece is movably arranged on the sensor shell along the first direction so as to enable the detection end head to move in a telescopic manner relative to the detection port;

the detection end cover is used for closing the detection port;

the detection end cover comprises a positioning part, a fixing part and a connecting part for connecting the positioning part and the fixing part;

the positioning part is fixedly arranged on the detection end head so as to enable the positioning part to move along with the detection end head in a telescopic manner;

the fixing part circumferentially surrounds the positioning part relative to the first direction, and is used for being fixedly arranged on the detection port;

the connecting portion covers an annular space between the positioning portion and the fixing portion, and has a telescopic amount in a radial direction of the first direction to match with telescopic movement of the positioning portion along with the detection end.

In an embodiment, the positioning part comprises a positioning cap, wherein one end of the positioning cap is closed, the other end of the positioning cap is opened, and the positioning cap is used for sleeving and fixing the positioning cap on the detection end.

In an embodiment, the positioning part comprises a hollow positioning ring, the two ends of the positioning ring are provided with openings, and the positioning ring is used for sleeving and is fixed on the detection end head.

In an embodiment, during the extending along the radial direction of the first direction, the connecting portion is formed with a plurality of bends, so that the connecting portion has the expansion and contraction amount.

In one embodiment, in the detection end cap, at least the connection portion is made of an elastic material.

In one embodiment, the fixing portion is made of an elastic material.

In an embodiment, the fixing portion includes an annular wall extending along the first direction, the annular wall being for sheathing the detection port;

the vehicle load sensor further comprises a fixing clamp which is used for being sleeved on the annular wall and fixing the annular wall to the detection port.

In an embodiment, a limiting groove is formed in the periphery of the annular wall, the limiting groove is used for being inserted by the fixing clamp, and the opening direction of the limiting groove is consistent with the extending direction of the detection end head from the detection port; or alternatively, the process may be performed,

the annular wall is kept away from the one end of connecting portion is equipped with the butt step, the butt step is used for supplying the tip butt of fixed clamp.

In one embodiment, the sensor housing is arc-shaped, and the sensor housing is used for being fixedly installed on a rotating shaft middle tube of the frame;

the two sides of the middle tube of the rotating shaft are respectively provided with a rear bottom fork, a limit baffle is fixed on the rear bottom fork and is used for being abutted to the positioning part or the detection end.

The embodiment of the application also provides an electric vehicle, the electric vehicle comprises a frame, a load sensor is installed on a rotating shaft middle tube of the frame, and the load sensor is the vehicle load sensor.

One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:

the embodiment of the application provides a vehicle load sensor and an electric vehicle, wherein the vehicle load sensor comprises a sensor shell and a load detection piece arranged in the sensor shell, a detection end head of the load detection piece is exposed out of a detection port of the sensor shell, and the load detection piece is movably arranged in the sensor shell along a first direction, so that the detection end head can move in a telescopic manner relative to the detection port; the vehicle load sensor further comprises a detection end cover for closing the detection port, the detection end cover comprises a positioning part and a fixing part which are respectively fixedly arranged on the detection end head and the detection port, an annular space between the fixing part and the positioning part is connected and covered through a connecting part, and the connecting part has a stretching amount relative to the radial direction of the detection port, so that the positioning part is matched with stretching movement of the detection end head.

That is, considering that the load sensor of the vehicle reflects the load by exposing the extension and contraction amount of the detection end to the detection port, the detection end cover of the embodiment includes the positioning portion and the fixing portion fixed to the detection end and the detection port, respectively, and, on one hand, the annular space between the fixing portion and the positioning portion is connected and covered by the connecting portion, so that the problems of jamming or failure caused by that sediment, dust and the like enter the sensor housing from the detection port can be effectively avoided, and good effects of preventing sediment and dust can be achieved; on the other hand, the connecting part is also provided with a telescopic quantity in the radial direction relative to the detection port, the telescopic quantity can be matched with the telescopic movement of the positioning part along with the detection end, the adverse effect on load detection caused by the increase of the detection end cover is reduced to the greatest extent, and the normal detection and detection precision of the vehicle load sensor are ensured.

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 description of the embodiments of the present utility model 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 diagram of a load sensor in the prior art.

Fig. 2 is a schematic structural view of a vehicle load sensor according to an embodiment of the present application.

Fig. 3 is a schematic structural view of the positioning cap according to the embodiment of the present application.

Fig. 4 is a schematic structural view of a positioning ring according to an embodiment of the present application.

Fig. 5 is a schematic view of the structure of fig. 2 from another view angle.

Fig. 6 is a schematic structural diagram of the detection end cap and the fixing clip fixed to the sensor housing according to the embodiment of the present application.

Fig. 7 is an assembly schematic view of the vehicle load sensor mounted to a vehicle frame according to an embodiment of the present application.

Fig. 8 is a schematic view of the vehicle load sensor of fig. 7 after being mounted on a vehicle frame.

Fig. 9 is a side view of the frame of the present embodiment after mounting the vehicle load sensor.

Fig. 10 is a cross-sectional view of the frame of the present embodiment after mounting the vehicle load sensor.

Wherein, the reference numerals:

1-a frame, 2-a rear bottom fork, 3-a limit baffle, 4-a rotating shaft middle tube,

100-a load sensor for a vehicle,

10-sensor housing, 11-detection port, 12-screw hole,

20-load detecting piece, 21-detecting end,

30-detecting end cover, 31-positioning part, 32-fixing part, 33-connecting part,

311-positioning cap, 312-positioning ring,

321-annular wall, 322-limit groove, 323-abutment step,

331-bending the sheet material, wherein,

40-fixing clips, 41-screws,

x-first direction.

Detailed Description

In order that the above-recited aspects may be better understood, a detailed description of exemplary embodiments of the present application will be presented below with reference to the drawings, it being apparent that the described embodiments are only a subset of the embodiments of the present application and not all of the embodiments of the present application, it being understood that the present application is not limited by the exemplary embodiments described herein.

In the prior art, a load sensor is usually installed on an electric vehicle to detect the load of the vehicle.

For example, referring to fig. 1, a common load sensor is shown, in which a load detecting member is mounted in a sensor housing of the load sensor, a detecting end 21 of the load detecting member is exposed out of a detecting port 11 of the sensor housing 10, and the load detecting member is movably mounted in the sensor housing, so that the detecting end can move telescopically relative to the detecting port; then, referring to fig. 7, 8 and 9, the load sensor may be specifically and fixedly mounted on the rotating shaft middle tube 4 of the frame 1, the rear bottom fork 2 is mounted on two sides of the rotating shaft middle tube 4, the rear bottom fork 2 is fixedly provided with a limit baffle 3, and the limit baffle 3 is abutted against the detection end 21 of the load sensor; when the frame is loaded, the middle tube of the rotating shaft and the rear bottom fork can rotate relatively, then the limiting baffle and the sensor shell are respectively fixed on the rear bottom fork and the middle tube of the rotating shaft, and the limiting baffle is abutted against the detection end, so that the relative rotation of the middle tube of the rotating shaft and the rear bottom fork can be conducted into the relative telescopic movement of the load detection piece relative to the sensor shell, and finally the relative telescopic movement of the load detection piece relative to the sensor shell is converted into a measurable physical quantity, and the load detection can be realized; for example by the hall effect.

However, since the load sensor is not sealed at the gap between the detection port and the detection end, the detection port may be disposed upward, so that silt, dust and the like often enter the sensor housing, which may adversely affect the relative telescopic movement of the load detection member relative to the sensor housing, reduce the detection accuracy of the load sensor, and even cause jamming or failure of the load sensor.

In view of the above, the present application provides a vehicle load sensor that seals the detection port by using a detection end cap, where a connection portion between a connection fixing portion and a positioning portion of the detection end cap has a telescopic amount along a radial direction of the detection port, so that, on the basis of ensuring sealing of the detection port, the positioning portion can cooperate with the detection end to perform telescopic movement, so that a larger resistance is not generated to the telescopic movement of the detection end relative to the detection port; namely, the detection port is closed under the condition that the detection precision of the vehicle load sensor is not affected, and sediment, dust and the like are prevented from entering the inside of the sensor shell.

Fig. 2 is a schematic structural view of a vehicle load sensor according to an embodiment of the present application, and a vehicle load sensor 100 includes a sensor housing 10, a load detection member 20, and a detection end cap 30; the sensor housing 10 has a detection port 11 opened with respect to the first direction X; the load detection member 20 is arranged in the sensor housing 10, the detection end head 21 of the load detection member 20 is exposed from the detection port 11, and the load detection member 20 is movably arranged on the sensor housing 10 along the first direction X so as to enable the detection end head 21 to move in a telescopic manner relative to the detection port 11; the detection end cover 30 is used for closing the detection port 11; wherein, the detecting end cap 30 comprises a positioning part 31, a fixing part 32 and a connecting part 33 connecting the positioning part 31 and the fixing part 32; the positioning portion 31 is fixedly mounted on the detecting end 21, so that the positioning portion 31 moves along with the detecting end 21 in a telescopic manner; the fixing portion 32 circumferentially surrounds the positioning portion 31 relative to the first direction X, and the fixing portion 32 is fixedly mounted on the detection port 11; the connection portion 33 covers an annular space between the positioning portion 31 and the fixing portion 32, and the connection portion 33 has an amount of expansion and contraction in a radial direction of the first direction X to match the expansion and contraction movement of the positioning portion 31 with the detection tip 21.

The working principle of the vehicle load sensor is as described above, and is not described in detail.

The detection end cover comprises a positioning part which is used for being fixedly arranged on the detection end head, so that the positioning part moves along with the detection end head in a telescopic manner when the detection end head moves relative to the detection end port; the detection end cover also comprises a fixing part, wherein the fixing part is used for being fixedly arranged on the detection port, and the fixing part circumferentially surrounds the positioning part relative to the first direction; then, the connecting part connects the fixing part and the positioning part; it should be understood that, in order to prevent silt and the like from entering the inside of the sensor housing, the connecting portion should cover the annular space between the positioning portion and the fixing portion; it should also be appreciated that in order to allow the positioning portion to flex with the sensing tip relative to the sensing port without providing significant resistance, the connecting portion should also have an amount of flex relative to the radial direction of the sensing port, i.e., relative to the radial direction of the first direction.

Specifically, it can be understood that the expansion and contraction amount may be, for example, elastic expansion and contraction of the connecting portion in a radial direction with respect to the first direction, or the expansion and contraction amount may be realized by a length of the connecting portion in the first direction being greater than a distance between the positioning portion and the fixing portion, or the expansion and contraction amount may be realized by both of the above two methods.

As for the embodiment, which kind of measurable physical quantity the relative telescopic movement of the load detecting member with respect to the sensor housing is converted into may be determined according to actual needs, for example, may be implemented according to hall effect, and of course, may be other measurable physical quantities.

The positioning portion is fixedly mounted on the detection end and moves telescopically with the detection end relative to the detection port, specifically, in one possible embodiment, referring to fig. 3, the positioning portion 31 includes, for example, a positioning cap 311, where the positioning cap 311 is provided with a closed end and an open end, and the positioning cap 311 is used to be sleeved and fixed on the detection end 21; here, it should be understood that, in order to increase the stability of the positioning cap fixed on the detection end, for example, the positioning cap should have a certain depth along the first direction, it can be tightly sleeved on the detection end and can move telescopically with the detection end; at this time, it should be understood that, because of the coverage of the positioning cap, the detection end indirectly abuts against the limit baffle of the frame through the positioning cap.

In another possible embodiment, referring to fig. 4, the positioning portion 31 includes a hollow positioning ring 312, where the positioning ring 312 is disposed with two ends open, and the positioning ring 312 is used for sleeving and fixing to the detection end 21; here, it should be understood that, in order to increase the stability of the fixing of the positioning ring on the detection end, the positioning ring has a certain height along the first direction, for example, is in a hollow column shape, etc., and can be tightly sleeved on the detection end and can move telescopically with the detection end; at this time, it should be understood that the detection end is a limit stop directly abutting against the frame.

Of course, in other possible embodiments, the positioning portion may take other configurations, regardless of the configuration used, and the positioning portion is always fixed to the test head and moves telescopically with the test head.

With respect to the connection portion, in one possible embodiment, with continued reference to fig. 3, during extension in the radial direction of the first direction X, the connection portion 33 is formed with a number of bends 331 to provide the connection portion 33 with an amount of expansion.

Namely, the connecting portion can achieve the above-mentioned expansion and contraction amount specifically through a plurality of bends. It can be appreciated that the connecting portion has a bend, increasing the length of the connecting portion in the radial direction of the first direction, so that the above-described amount of expansion and contraction can be provided by increasing the length; the bending is annular with respect to the first direction.

In one possible embodiment, at least the connection portion 33 of the detecting end cap 30 is made of an elastic material, which may be a soft rubber such as PE, PP, etc.; it will be appreciated that the elastic material may achieve the elastic expansion and contraction described above, as well as the amount of expansion and contraction of the connection.

Of course, the connecting portion may be made of an elastic material, and a plurality of bends are formed at the same time.

As for the fixing portion of the detection end cap, the fixing portion 32 may be made of an elastic material, so that the adaptability of the fixing portion to the detection port may be improved, or the fixing portion may be adapted to the detection ports with different shapes; for example, the fixing portion has a circular cross section, and can be fixed to a detection port having a square cross section due to the elastic material.

The specific materials of the fixing portion are described above, and regarding the structure of the fixing portion, in one possible embodiment, with reference to fig. 3, 5 and 6, the fixing portion 32 includes an annular wall 321 extending along the first direction X, and the annular wall 321 is used to cover the detection port 11; the vehicle load sensor 100 further includes a fixing clip 40, wherein the fixing clip 40 is used for being sleeved on the annular wall 321 and fixing the annular wall 321 to the detection port 11.

That is, in order to increase the fixing firmness of the fixing portion, on the one hand, the fixing portion may include an annular wall having a certain height in the first direction; then, on the other hand, after the annular wall is sleeved on the detection port, a fixing clip can be further installed on the outer side of the annular wall, and the fixing clip 40 is fixed to the screw hole 12 of the sensor housing 10 through a screw 41.

Further, referring to fig. 5, a limiting groove 322 is formed on the outer periphery of the annular wall 321, the limiting groove 322 is used for inserting the fixing clip 40, and the opening direction of the limiting groove 322 is consistent with the extending direction of the detecting end 21 from the detecting port 11, so that the detecting end cover can be prevented from being pulled out due to the telescopic movement of the detecting end.

Alternatively, referring to fig. 3 and 4, an abutment step 323 is provided at an end of the annular wall 321 away from the connecting portion 33, and the abutment step 323 is used for abutting an end portion of the fixing clip 40, so that the technical effect that the detection end cap is pulled out due to the telescopic movement of the detection end can be avoided.

As for the positioning part of the detection end cover, the positioning part, the fixing part and the connecting part of the detection end cover can be integrally formed at the moment by adopting elastic materials, and the detection end cover is a soft rubber sleeve at the moment.

In order to match the installation of the rotating shaft middle tube 4, the sensor shell 10 can be arc-shaped, and the sensor shell 10 is used for fixedly installing the rotating shaft middle tube 4 of the frame 1; the two sides of the middle tube 4 of the rotating shaft are respectively provided with a rear bottom fork 2, a limit baffle 3 is fixed on the rear bottom fork 2, and the limit baffle 3 is used for abutting against the positioning part 31 or the detection end 21.

Based on the vehicle load sensor, the application also provides an electric vehicle, the electric vehicle comprises a frame, the load sensor is installed on the rotating shaft middle tube of the frame, and the load sensor is the vehicle load sensor.

The basic principles of the present application have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not limiting, and these advantages, benefits, effects, etc. are not to be considered as necessarily possessed by the various embodiments of the present application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not intended to be limited to the details disclosed herein as such.

The block diagrams of the devices, apparatuses, devices, systems referred to in this application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.

It is also noted that in the apparatus, devices and methods of the present application, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent to the present application.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize that certain variations, modifications, alterations, additions, and sub-combinations thereof are intended to be included within the scope of the utility model.

Claims

1. A vehicle load sensor, comprising:

a sensor housing (10) having a detection port (11) that is open with respect to a first direction (X);

the load detection piece (20) is arranged in the sensor shell (10), a detection end head (21) of the load detection piece (20) is exposed out of the detection port (11), and the load detection piece (20) is movably mounted on the sensor shell (10) along the first direction (X) so as to enable the detection end head (21) to move in a telescopic mode relative to the detection port (11);

a detection end cap (30) for closing the detection port (11);

wherein the detection end cover (30) comprises a positioning part (31), a fixing part (32) and a connecting part (33) for connecting the positioning part (31) and the fixing part (32);

the positioning part (31) is fixedly arranged on the detection end head (21) so that the positioning part (31) moves along with the detection end head (21) in a telescopic manner;

the fixing part (32) circumferentially surrounds the positioning part (31) relative to the first direction (X), and the fixing part (32) is used for being fixedly arranged on the detection port (11);

the connecting portion (33) covers an annular space between the positioning portion (31) and the fixing portion (32), and the connecting portion (33) has a telescopic amount in a radial direction of the first direction (X) to match the telescopic movement of the positioning portion (31) with the detection tip (21).

2. The vehicle load sensor according to claim 1, wherein the positioning portion (31) includes a positioning cap (311), the positioning cap (311) is provided with one end closed and the other end open, and the positioning cap (311) is used for sleeving and fixing to the detection end (21).

3. The vehicle load sensor according to claim 1, wherein the positioning portion (31) includes a hollow positioning ring (312), the positioning ring (312) is provided in a shape of an opening at both ends, and the positioning ring (312) is used for a jacket and is fixed to the detection tip (21).

4. The vehicle load sensor according to claim 1, characterized in that the connecting portion (33) is formed with a number of bends (331) during extension in the radial direction of the first direction (X) so that the connecting portion (33) has the amount of expansion and contraction.

5. The vehicle load sensor according to claim 4, characterized in that in the detection end cap (30), at least the connecting portion (33) is made of an elastic material.

6. The vehicle load sensor according to claim 1, characterized in that the fixing portion (32) is made of an elastic material.

7. The vehicle load sensor according to claim 1, characterized in that said fixed part (32) comprises an annular wall (321) extending in said first direction (X), said annular wall (321) being intended to be sheathed on said detection port (11);

wherein, vehicle load sensor still includes fixed clamp (40), fixed clamp (40) are used for overcoat in annular wall (321) and will annular wall (321) are fixed in detection port (11).

8. The vehicle load sensor according to claim 7, characterized in that a limit groove (322) is provided on the outer periphery of the annular wall (321), the limit groove (322) is used for inserting the fixing clip (40), and the opening direction of the limit groove (322) is consistent with the extending direction of the detection end head (21) from the detection port (11); or alternatively, the process may be performed,

an abutting step (323) is arranged at one end, far away from the connecting portion (33), of the annular wall (321), and the abutting step (323) is used for abutting the end portion of the fixing clamp (40).

9. The vehicle load sensor according to claim 1, characterized in that the sensor housing (10) is arc-shaped, the sensor housing (10) being adapted to be fixedly mounted to a pivot tube (4) of the vehicle frame (1);

the two sides of the rotating shaft middle tube (4) are respectively provided with a rear bottom fork (2), a limit baffle (3) is fixed on the rear bottom fork (2), and the limit baffle (3) is used for abutting against the positioning part (31) or the detection end (21).

10. An electric vehicle, characterized in that the electric vehicle comprises a frame, a load sensor is arranged in a rotating shaft middle tube of the frame, and the load sensor is the vehicle load sensor according to any one of claims 1 to 9.