CN220769909U - Rivet nut assembly, box, battery pack and power utilization device - Google Patents

Abstract

The application provides a draw and rivet nut subassembly, box, battery package and power consumption device, draw and rivet nut subassembly including drawing and rivet nut and sealing member, draw and rivet nut including interconnect's head and pole portion, draw and be formed with the through-hole that runs through head and pole portion in the nut, the sealing member lid is located the one end that the head was kept away from to the through-hole. This draw and rivet nut subassembly is through locating the sealing member lid and is kept away from the one end of head with the through-hole, after the installation draws and rivet nut, the sealing member lid is located on the through-hole, shutoff to the through-hole can reduce the piece in the section bar and drop from the risk of through-hole.

Description

Rivet nut assembly, box, battery pack and power utilization device

Technical Field

The application relates to the technical field of lithium battery manufacturing, in particular to a rivet nut assembly, a box body, a battery pack and an electric device.

Background

After the mounting holes for mounting the rivet nuts are machined on the frame of the battery pack, scraps generated by machining can fall into the inner cavity of the frame and cannot be cleaned. After installation of the blind rivet nut, the chips may fall out of the through hole of the blind rivet nut.

The foregoing is merely a description of the related art and is not an admission that the applicant is prior art.

In view of the foregoing, it is desirable to provide a new blind rivet nut assembly, a case, a battery pack, and an electrical device that address or at least alleviate the above-described drawbacks.

Disclosure of Invention

In view of the above, the present application provides a blind rivet nut assembly, a case, a battery pack, and an electric device, which are aimed at solving the technical problem that chips in a frame may fall from a through hole of a blind rivet nut in the related art.

According to some embodiments of the present application, there is provided a blind rivet nut assembly comprising a blind rivet nut and a sealing member, the blind rivet nut comprising a head portion and a stem portion which are connected to each other, a through hole penetrating through the head portion and the stem portion being formed in the blind rivet nut, the sealing member being disposed so as to cover the through hole at an end remote from the head portion.

Through locating the sealing member lid one end that the head was kept away from to the through-hole, after the rivet nut was pulled in the installation, the sealing member lid was located on the through-hole, plugged the through-hole, can reduce the risk that piece in the frame dropped from the through-hole. Especially for the battery pack which needs to be installed reversely, after the rivet nut is installed, before the screw piece is installed, the battery pack needs to be overturned, and scraps are easier to fall from the through hole. The present application is particularly suited for inverted mounted battery packs.

In some embodiments, the rod portion includes a first rod and a second rod connected to each other, two ends of the first rod are connected to the head and the second rod, respectively, a cross-sectional dimension of the second rod is smaller than a cross-sectional dimension of the first rod, and the sealing member is sleeved on an outer wall surface of the second rod.

By sleeving the sealing element on the outer wall surface of the second rod, the sealing element can be arranged on the second rod, and the risk of falling off of the sealing element is reduced. And the diameter of the second rod is designed to be smaller than that of the first rod, so that a space can be reserved for installing the sealing element, the second rod can be conveniently inserted into the installation hole, and the resistance for installing the rivet nut is reduced.

In some embodiments, the sealing member includes a blocking portion and a connecting portion that are connected to each other, the blocking portion covers the through hole, and the connecting portion is sleeved on the outer wall surface of the second rod.

Through setting up the sealing member to including shutoff portion and connecting portion, the shutoff portion is used for preventing with the shutoff of through-hole that the piece from dropping from the through-hole indicates in the box, and connecting portion is used for firmly installing the sealing member on the second pole, is favorable to increasing the firm nature of installation.

In some embodiments, the second rod comprises a transition rod and a connecting rod, two ends of the transition rod are respectively connected with the connecting rod and the first rod, the sealing piece is sleeved on the outer wall surface of the connecting rod, and the cross section size of the transition rod is gradually reduced from the first rod to the connecting rod.

Through divide into transition pole and connecting rod with the second pole, locate the sealing member cover on the outer wall of connecting rod, set up the transition pole, compare in the cascaded structure that directly set up the diameter abrupt change, can realize smooth transition, reduce because draw the riveting nut when inaccurate leading to the transition of second pole to first pole of centering, the first pole collides with the opening of mounting hole and causes the risk of damage.

In some embodiments, the sealing member includes a blocking portion and a connecting portion that are connected to each other, the blocking portion is covered on the through hole, and the connecting portion is sleeved on the outer wall surface of the connecting rod.

The sealing piece is sleeved on the connecting rod with smaller diameter, so that the rivet nut can pass through the mounting hole more conveniently.

In some embodiments, the connecting portion has an outer diameter that is less than the size of the first stem cross-section.

Through designing the size of sealing member to be less than the size of first pole, after the second pole is located to the sealing member cover for the rivet nut of installing the sealing member is in the in-process that stretches into the mounting hole, can not receive the interference of mounting hole and can get into in the inner chamber of frame smoothly, both made things convenient for the installation of rivet nut, also reduced the impaired risk of sealing member in the installation.

In some embodiments, the seal is an interference fit with the stem.

Through setting up sealing member and pole portion interference fit, can improve the fastness of sealing member installation, all be difficult for the pine to take off in installation and the use, further reduce the risk that the piece dropped.

In some embodiments, the seal extends at least partially into the through hole to block the through hole.

Through stretching into the through-hole with sealing member at least part, can be that the sealing member sets up in the through-hole entirely, also can be that sealing member part sets up in the through-hole, reaches the purpose with the shutoff of through-hole, reduces the risk that the piece dropped from the through-hole.

In some embodiments, the seal includes an abutment and a projection interconnected, the projection projecting into the through bore, the abutment abutting an end of the stem remote from the head.

Through setting up sealing member and including butt portion and extension, the one end butt of head is kept away from to butt portion and pole portion can play the sealed effect that drops to the through-hole with avoiding the sealing member, and the extension can play shutoff through-hole and promote the effect of installation reliability, plays better shutoff effect and improves installation intensity, further reduces the risk that the piece dropped from the through-hole.

In some embodiments, the seal is an interference fit with the through hole.

Through setting up sealing member and through-hole and setting up to interference fit, can improve the fastness of sealing member installation, all be difficult for the pine to take off in installation and the use, further reduce the risk that the piece dropped.

In some embodiments, the seal is an elastomeric seal.

The sealing piece is made of the elastic material, so that the sealing piece deforms when extending into the through hole, the sealing property between the sealing piece and the through hole under the action of elastic restoring force in the through hole is higher, and the installation firmness can be improved.

In some embodiments, the seal is a rubber.

By adopting rubber to manufacture the sealing element, the firmness of installation can be further improved.

In some embodiments, the through hole comprises a first through hole and a second through hole which are communicated with each other, the first through hole penetrates through the head part and a part of the rod part, the second through hole penetrates through the other part of the rod part, threads are arranged on the inner wall of the second through hole, and the sealing piece covers the end, far away from the first through hole, of the second through hole.

Through set up the screw thread in the second through-hole, the screw thread spare can be through with the screw thread spiro union, can make the blind rivet nut be fixed in on the mounting hole of frame at the in-process that the screw thread spare was outwards pulled or is rotated.

According to some embodiments of the present application, the present application provides a box, the box includes frame, screw and above-mentioned rivet nut subassembly, be formed with the inner chamber in the frame, be formed with on the frame with the mounting hole of inner chamber intercommunication, the head with the outer wall butt of frame, the pole portion stretches into in the inner chamber, the screw install in the through-hole just with the screw spiro union of through-hole inner wall. The frame is formed by connecting profiles, and the profiles can be aluminum profiles which are light in weight and relatively low in cost. The profile is a hollow profile, an inner cavity is formed in the profile, a mounting hole communicated with the inner cavity is formed in the wall surface of the profile, the mounting hole is used for mounting the rivet nut assembly, and the threaded piece is mounted in a through hole of the rivet nut assembly. The box body comprises all the embodiments of all the technical schemes of the rivet nut assembly, so that the rivet nut assembly has at least all the beneficial effects brought by all the embodiments and is not described in detail herein.

According to some embodiments of the present application, the present application provides a battery pack, including the above-mentioned box and a battery module disposed in the box. The battery module comprises a plurality of battery cells, and the battery pack comprises all embodiments of all the technical schemes of the box body, so that the battery module at least has all the beneficial effects brought by all the embodiments, and the details are not repeated here.

According to some embodiments of the present application, there is provided an electrical device including a housing, in which a mounting location is provided, the mounting location being used for mounting the battery pack. The power utilization device comprises all embodiments of all the technical schemes of the battery pack, so that the power utilization device has at least all the beneficial effects brought by all the embodiments, and the description is omitted herein.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

fig. 2 is an exploded view of a battery pack according to some embodiments of the present application;

FIG. 3 is a schematic view of a blind rivet nut assembly, according to some embodiments of the present application;

FIG. 4 is a schematic illustration of a rivet nut of the rivet nut assembly, according to some embodiments of the present application;

FIG. 5 is a schematic illustration of a seal of a blind rivet nut assembly, according to some embodiments of the present application;

FIG. 6 is a schematic illustration of a rivet nut assembly and frame of a box according to some embodiments of the present application;

FIG. 7 is a schematic cross-sectional view of a frame of a case according to some embodiments of the present application;

FIG. 8 is another schematic illustration of a blind rivet nut assembly, according to some embodiments of the present application;

FIG. 9 is another schematic structural view of a blind rivet nut of the blind rivet nut assembly, according to some embodiments of the present application;

FIG. 10 is another structural schematic view of a seal of a blind rivet nut assembly, according to some embodiments of the present application;

FIG. 11 is another schematic illustration of a blind rivet nut assembly and frame for a box according to some embodiments of the present application.

Reference numerals in the specific embodiments are as follows:

1000. a vehicle; 2000. chipping;

100. a battery pack; 200. a controller; 300. a motor;

10. a case;

1. a frame; 101. an inner cavity; 102. a mounting hole; 2. a rivet nut assembly; 21. pulling and riveting a nut; 211. a through hole; 2111. a first through hole; 21111. a first opening; 2112. a second through hole; 21121. a second opening; 212. a head; 213. a stem portion; 2131. a first lever; 2132. a second lever; 21321. a transition rod; 21322. a connecting rod; 213221, outer wall surfaces; 22. a seal; 221. a blocking part; 222. a connection part; 223. an abutting portion; 224. an extension;

20. and a battery module.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, and a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

In the manufacturing process of the box body of the battery pack, the box body comprises a frame, the frame is generally formed by connecting profiles with inner cavities, and in the processing process, mounting holes are needed to be drilled in the profiles so as to facilitate the subsequent installation of rivet nuts and threaded pieces. And scraps can be generated in the process of punching the mounting holes, and the scraps fall into the inner cavity of the profile and are difficult to clean. Especially for the battery pack of inversion installation, after the rivet nut is pulled in the installation hole installation, need to overturn the battery pack and invert, in this moment the piece is likely to drop into the battery pack from the through-hole of rivet nut, causes there is piece impurity in the battery pack. If the section bar adopts aluminium section bar, the piece that produces is aluminium bits, and aluminium bits can electrically conduct, still has the security risk. A layer of adhesive tape can be stuck on the through hole of the rivet nut to prevent fragments from falling out, but the adhesive tape is not firm in connection, and the adhesive tape is easy to fall off.

The box body disclosed by the embodiment of the application can be used for an electric device using a battery pack as a power supply or various energy storage systems using the battery pack as an energy storage element. The power device may be, but is not limited to, a cell phone, tablet, notebook computer, electric toy, electric tool, battery car, electric car, ship, spacecraft, etc. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present application as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery pack 100 is provided in the interior of the vehicle 1000, and the battery pack 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery pack 100 may be used for power supply of the vehicle 1000, for example, the battery pack 100 may serve as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery pack 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present application, the battery pack 100 may not only serve as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1000.

Referring to fig. 2, the battery pack 100 includes a case 10 and a battery module 20, and the battery module 20 is received in the case 10. The case 10 is used for providing an accommodating space for the battery module 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a bottom 12 and a cover 11, the bottom 12 and the cover 11 being covered with each other, the bottom 12 and the cover 11 together defining a receiving space for receiving the battery module 20. The cover plate 11 may have a hollow structure with an opening at one end, the bottom 12 may have a plate-like structure, and the bottom 12 covers the opening side of the cover plate 11, so that the bottom 12 and the cover plate 11 together define an accommodating space; the bottom 12 and the cover 11 may be hollow structures with one side open, and the open side of the bottom 12 is closed to the open side of the cover 11. Of course, the case 10 formed by the bottom 12 and the cover 11 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

In the battery pack 100, the battery module 20 includes a plurality of battery cells 15, and the battery cells 15 may be connected in series or parallel or in parallel, and the series-parallel refers to that the battery cells 15 are connected in series or parallel. The multiple electric cores 15 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the multiple electric cores 15 is accommodated in the box 10; of course, the battery pack 100 may also be a battery module form formed by connecting a plurality of battery cells 15 in series or parallel or series-parallel connection, and then connecting a plurality of battery modules in series or parallel or series-parallel connection to form a whole and be accommodated in the case 10. The battery pack 100 may also include other structures, for example, the battery pack 100 may also include a bus bar member for making electrical connection between the plurality of battery cells 15.

Wherein each cell 15 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cell 15 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes.

Referring to fig. 3-5, according to some embodiments of the present application, there is provided a blind rivet nut assembly 2, including a blind rivet nut 21 and a sealing member 22, wherein the blind rivet nut 21 includes a head portion 212 and a rod portion 213 connected to each other, a through hole 211 penetrating the head portion 212 and the rod portion 213 is formed in the blind rivet nut 21, and the sealing member 22 is covered at an end of the through hole 211 remote from the head portion 212.

Referring to fig. 6 and 7, fig. 6 is a schematic structural view of the rivet nut assembly 2 mounted to the frame 1, the frame 1 is provided with a mounting hole 102, the rivet nut 21 is mounted on the mounting hole 102, the rivet nut 21 includes a head 212 and a stem 213, the head 212 is larger in size than the stem 213, the stem 213 is configured to extend into the cavity 101 of the frame 1 through the mounting hole 102, the head 212 is configured to seal the opening of the mounting hole 102, and the head 212 is generally abutted against the outer wall of the frame 1. The blind rivet nut 21 is formed with a through hole 211, and the through hole 211 penetrates through the blind rivet nut 21 along the central axis direction of the rod portion 213, so that subsequent threaded member installation and tightening of the blind rivet nut 21 are facilitated. The through hole 211 penetrates through the blind rivet nut 21, a first opening 21111 and a second opening 21121 are formed in the blind rivet nut 21, the first opening 21111 is located at the head portion 212, a screw member enters from the first opening 21111 and extends into the through hole 211, the second opening 21121 is located at the rod portion 213, that is, one end of the through hole 211 away from the head portion 212, the second opening 21121 is located in the inner cavity 101 of the frame 1 after the blind rivet nut assembly 2 is mounted to the mounting hole 102, and the sealing member 22 covers the second opening 21121 of the through hole 211.

By covering the sealing member 22 on the end of the through hole 211 far away from the head 212, and covering the sealing member 22 on the through hole 211 after the rivet nut 21 is mounted, the through hole 211 is blocked, so that the risk that the chips 2000 in the frame 1 fall from the through hole 211 can be reduced. Particularly, for the battery pack 100 to be mounted upside down, the battery pack 100 needs to be turned over after the rivet nut 21 is mounted and before the screw member is mounted, and the scraps 2000 are more likely to fall from the through-hole 211. The present application is particularly applicable to battery packs 100 that are mounted upside down. In addition, when the threaded member is installed in the through hole 211 of the blind rivet nut 21, the sealing member 22 may be ejected out of the inner cavity 101 or the sealing member 22 may not be ejected out during the process of extending into the through hole 211, and the sealing member 22 is still installed on the blind rivet nut 21, which will not affect the normal installation of the threaded member. Therefore, the provision of the seal 22 does not affect the subsequent process of installing the screw.

Referring to fig. 3 and 4, in some embodiments, the stem 213 includes first and second interconnected stems 2131 and 2132, the first stem 2131 being connected at both ends to the head 212 and the second stem 2132, respectively, the second stem 2132 having a cross-sectional dimension that is smaller than the cross-sectional dimension of the first stem 2131, and the seal 22 being sleeved on the outer wall 213221 of the second stem 2132.

One end of the first rod 2131 is connected to the head 212 and one end of the first rod 2131 remote from the head 212 is connected to the second rod 2132. It should be noted that the rod portion 213 is divided into the first rod 2131 and the second rod 2132 for convenience of description, and in actual practice, the first rod 2131 and the second rod 2132 may be integrally formed. The through hole 211 penetrates the first rod 2131 and the second rod 2132, and in particular, a second opening 21121 of the through hole 211 is formed at an end of the second rod 2132, that is, an end of the second rod 2132 remote from the first rod 2131. When the blind rivet nut 21 is installed, the second rod 2132 is first passed from the mounting hole 102 into the frame 1, and the seal 22 is placed over the second opening 21121 to reduce the risk of debris 2000 passing from the second opening 21121 into the through hole 211. The sealing member 22 is sleeved on the outer wall surface 213221 of the second rod 2132, so that the sealing member 22 is mounted, and the sealing member 22 is prevented from falling off. Since the outer wall surface 213221 of the second rod 2132 is further required to be provided with the sealing member 22, a certain thickness is increased, so that the second rod 2132, which is sleeved with the sealing member 22, can be inserted into the mounting hole 102, and the cross section of the second rod 2132 can be designed to be smaller, and the cross section is a cross section perpendicular to the central axis direction of the through hole 211, that is, a cross section taken from the direction a in fig. 3, and the diameter of the second rod 2132 can be set smaller than that of the first rod 2131 because the rod 213 is generally cylindrical.

By fitting the seal 22 over the outer wall surface 213221 of the second stem 2132, the seal 22 can be mounted to the second stem 2132, reducing the risk of the seal 22 falling out. And the diameter of the second rod 2132 is designed to be smaller than the diameter of the first rod 2131, which can provide room for the installation of the seal 22, facilitating the insertion of the second rod 2132 into the mounting hole 102 and reducing the resistance to installation of the blind rivet nut 21.

Referring to fig. 5, in some embodiments, the sealing member 22 includes a blocking portion 221 and a connecting portion 222 connected to each other, the blocking portion 221 is covered on the through hole 211, and the connecting portion 222 is sleeved on the outer wall surface 213221 of the second rod 2132.

The blocking portion 221 is provided to cover the end of the second rod 2132, and the second opening 21121 of the through hole 211 is formed at the end of the second rod 2132, so that the through hole 211 is blocked by the blocking portion 221, and the possibility that the chips 2000 fall out of the through hole 211 is reduced. The connection portion 222 is sleeved on the outer wall surface 213221 of the second rod 2132, specifically, may abut against the outer wall surface 213221 of the second rod 2132, such that the connection portion 222 is mounted on the second rod 2132. Specifically, the blocking portion 221 may be a circular shape, the shape of the blocking portion 221 corresponds to the shape of the end portion of the second rod 2132, and the connecting portion 222 may be an annular side wall, which is disposed on the outer wall 213221 of the second rod 2132 and is adhered to the outer wall 213221.

By providing the seal 22 to include the blocking portion 221 and the connecting portion 222, the blocking portion 221 serves to block the through hole 211 to reduce the possibility of the debris 2000 falling from the through hole 211 to the case 10, and the connecting portion 222 serves to firmly mount the seal 22 on the second rod 2132, which is advantageous in increasing the reliability of the mounting.

Referring to fig. 3 and 4, in some embodiments, the second rod 2132 includes a transition rod 21321 and a connecting rod 21322, both ends of the transition rod 21321 are respectively connected to the connecting rod 21322 and the first rod 2131, the sealing member 22 is sleeved on the outer wall surface 213221 of the connecting rod 21322, and the cross-sectional dimension of the transition rod 21321 gradually decreases from the first rod 2131 to the connecting rod 21322.

During installation of the blind rivet nut 21 into the mounting hole 102, the blind rivet nut 21 is inserted into the mounting hole 102 from one end of the second rod 2132. This embodiment provides that the second rod 2132 includes a transition rod 21321 and a connecting rod 21322. First, the connecting rod 21322 enters the mounting hole 102, then the transition rod 21321 enters the last first rod 2131. The cross-sectional dimension of the transition rod 21321 decreases from the first rod 2131 toward the connecting rod 21322 assembly, i.e., increases gradually from the connecting rod 21322 toward the first rod 2131, thus providing a transition and guiding function, completing a smooth transition from the smaller diameter second rod 2132 to the larger diameter first rod 2131.

By dividing the second rod 2132 into the transition rod 21321 and the connecting rod 21322, and sleeving the sealing member 22 on the outer wall surface 213221 of the connecting rod 21322, the transition rod 21321 is arranged, so that smooth transition can be realized compared with a step structure with abrupt diameter change, and the risk of damage caused by collision between the first rod 2131 and the mounting hole 102 when the second rod 2132 is transited to the first rod 2131 due to misalignment of the blind rivet nut 21 is reduced.

Referring to fig. 5, in some embodiments, the sealing member 22 includes a blocking portion 221 and a connecting portion 222 connected to each other, the blocking portion 221 is covered on the through hole 211, and the connecting portion 222 is sleeved on the outer wall surface 213221 of the connecting rod 21322.

The blocking portion 221 is configured to be disposed on an end portion of the second rod 2132, and when the second rod 2132 includes the connecting rod 21322 and the transition rod 21321 connected to each other, the diameter of the connecting rod 21322 is smaller than the smallest diameter of the cross section of the transition rod 21321, and the second opening 21121 of the through hole 211 is formed on the end portion of the connecting rod 21322, that is, the end portion of the connecting rod 21322 remote from the transition rod 21321. The through hole 211 is thus blocked by the blocking portion 221, reducing the possibility of the chip 2000 falling from within the through hole 211. The connection portion 222 is sleeved on the outer wall surface 213221 of the connection rod 21322, specifically, may abut against the outer wall surface 213221 of the second rod 2132, so that the connection portion 222 is mounted on the second rod 2132. Specifically, the blocking portion 221 may be a circular shape, the shape of the blocking portion 221 corresponds to the shape of the end portion of the second rod 2132, and the connecting portion 222 may be an annular side wall, which is disposed on the outer wall 213221 of the connecting rod 21322 and is adhered to the outer wall 213221.

By sleeving the sealing member 22 on the connecting rod 21322 with a smaller diameter, the rivet nut 21 is more conveniently pulled through the mounting hole 102.

In some embodiments, the outer circular dimension of the connecting portion 222 is less than the dimension of the first stem 2131 cross-section.

The cross section refers to a cross section taken perpendicular to the central axis direction of the through hole 211, i.e., a cross section taken from the direction a in fig. 3, and the cylinder is, when the first rod 2131, i.e., the diameter of the first rod 2131. The connecting portion 222 of the sealing member 22 may be sleeved on the outer wall surface 213221 of the second rod 2132, or when the second rod 2132 includes the connecting rod 21322, the connecting portion 222 is sleeved on the outer wall surface 213221 of the connecting rod 21322, and the outer diameter of the connecting portion 222 is smaller than the size of the cross section of the first rod 2131, so as to facilitate the extending into the mounting hole 102.

By designing the size of the sealing member 22 to be smaller than that of the first rod 2131, after the sealing member 22 is sleeved on the second rod 2132, the rivet nut 21 provided with the sealing member 22 can smoothly enter the inner cavity 101 of the profile without interference of the mounting hole 102 in the process of extending into the mounting hole 102, thereby facilitating the mounting of the rivet nut 21 and reducing the risk of damaging the sealing member 22 in the mounting process.

In some embodiments, the seal 22 is an interference fit with the stem 213.

The interference fit provides a tighter connection between the seal 22 and the stem 213, which is less prone to loosening both during installation of the blind rivet nut 21 and during use of the battery pack 100 after installation is complete.

Through setting up sealing member 22 and pole portion 213 interference fit, can improve the fastness of sealing member 22 installation, all be difficult for the pine to take off in installation and the use, further reduce the risk that piece 2000 dropped.

Referring to fig. 8-11, in some embodiments, the seal 22 extends at least partially into the through hole 211 to block the through hole 211.

The seal 22 of this embodiment is different from the seal 22 described above, in which the seal 22 seals the through hole 211 by covering the second opening 21121 of the through hole 211. In this embodiment, the blocking member extends into the through hole 211 from the second opening 21121 to block the through hole 211. Here, at least part of the seal member 22 may be disposed entirely in the through hole 211 or may be disposed only partially in the through hole 211, and may seal the through hole 211.

By extending the sealing member 22 at least partially into the through hole 211, the sealing member 22 may be disposed entirely in the through hole 211, or the sealing member 22 may be disposed partially in the through hole 211, so as to achieve the purpose of plugging the through hole 211 and reduce the risk of falling the chip 2000 from the through hole 211.

Referring to fig. 10, in some embodiments, the seal 22 includes an abutment 223 and a projection 224 that are connected to each other, the projection 224 projecting into the through bore 211, the abutment 223 abutting an end of the stem 213 remote from the head 212.

The end of the rod portion 213 away from the head portion 212, that is, the end of the rod portion 213 extending into the profile, and the second through hole 2112 is disposed at the end of the rod portion 213, and the size of the abutment portion 223 may be larger than the size of the second opening 21121 of the through hole 211, so as to abut against the outer edge of the second opening 21121, thereby not only blocking the second opening 21121 of the through hole 211, but also preventing the sealing member 22 from falling into the through hole 211. The protruding portion 224 protrudes into the through hole 211 to block the opening and improve the mounting firmness.

Through setting up sealing member 22 and including butt portion 223 and extension 224, the one end butt that head 212 was kept away from to butt portion 223 and pole portion 213 can play the sealed effect of avoiding sealing member 22 to drop to in the through-hole 211, and extension 224 can play shutoff through-hole 211 and promote the effect of installation reliability, plays better shutoff effect and improves installation intensity, further reduces the risk that piece 2000 dropped from through-hole 211.

In some embodiments, the seal 22 is an interference fit with the through bore 211.

The interference fit makes the seal 22 more tightly coupled to the through hole 211 and less prone to loosening both during installation of the blind rivet nut 21 and during use of the battery pack 100 after installation is completed.

Through setting up sealing member 22 and through-hole 211 and setting up to interference fit, can improve the fastness of sealing member 22 installation, all be difficult for the pine to take off in installation and the use, further reduce the risk that piece 2000 dropped.

In some embodiments, the seal 22 is a resilient seal.

The elastic sealing member refers to the sealing member 22 made of elastic material, such as silica gel, rubber or other elastic and strong materials. At this time, the sealing member 22 is elastically deformed by extrusion when extending into the through hole 211, and abuts against the inner wall surface of the through hole 211 under the action of the deformation restoring force after extending into the through hole 211, so that the sealing performance is improved, and the installation firmness is improved due to a certain pre-pressure. Of course, when the seal 22 includes the protruding portion 224 and the abutting portion 223, the protruding portion 224 may be made of an elastic material, or both the protruding end and the abutting portion 223 may be made of an elastic material.

By making the seal member 22 of an elastic material, the seal member 22 is deformed when it is inserted into the through hole 211, the tightness between the elastic restoring force and the through hole 211 is improved in the through hole 211, and the mounting firmness can be improved.

In some embodiments, the seal 22 is a rubber member.

The sealing member 22 can be made of rubber material, and rubber not only has certain elasticity, can take place deformation when the installation and get into in the through-hole 211, can also through elastic restoring force and through-hole 211 zonulae occludens after the installation is accomplished, promotes the fastness of installation. Meanwhile, the rubber piece has certain hardness, and is not easy to fall off after the installation is completed.

By making the seal 22 of rubber, the mounting firmness can be further improved.

Referring to fig. 4, in some embodiments, the through hole 211 includes a first through hole 2111 and a second through hole 2112 which are communicated with each other, the first through hole 2111 penetrates the head 212 and a portion of the rod 213, the second through hole 2112 penetrates the remaining portion of the rod 213, the inner wall of the second through hole 2112 is provided with threads, and the sealing member 22 is provided to cover an end of the second through hole 2112 remote from the first through hole 2111.

The stem 213 is connected to the head 212, the first and second through holes 2111 and 2112 communicate to form a through hole 211, the first through hole 2111 forms a first opening 21111, the second through hole 2112 forms a second opening 21121, and the seal 22 closes the second opening 21121 of the second through hole 2112. In general, the first via 2111 is larger in size than the second via 2112. After the blind rivet nut assembly 2 is mounted, the screw member enters the second through hole 2112 from the first through hole 2111, the screw portion 213 of the screw member is formed with a screw thread, the screw thread is screwed with the screw thread of the second through hole 2112, and then the blind rivet nut 21 is pulled outward by rotating the screw member, so that the rod portion 213 of the blind rivet nut 21 is deformed to abut against the inner wall surface of the mounting hole 102, and the blind rivet nut 21 is fixed. It should be noted that, during the process of installing the screw member to the blind rivet nut 21, the sealing member 22 may be lifted off, so that the sealing member 22 is separated from the blind rivet nut 21, but since the screw member is already installed into the through hole 211, the plugging effect may be achieved, and therefore the chips 2000 cannot fall from the through hole 211. Of course, the screw may not push the sealing member 22 down, and the sealing member 22 is always mounted on the rivet nut 21, so that a good plugging effect can be achieved.

By providing the screw thread in the second through hole 2112, the screw member can be screwed with the screw thread, and the blind rivet nut 21 can be fixed to the mounting hole 102 of the profile in the process of pulling or rotating the screw member outward.

According to some embodiments of the present application, the present application provides a box, including a blind rivet nut 21 and a sealing member 22, the blind rivet nut 21 includes a head 212 and a rod 213 connected to each other, a through hole 211 penetrating the head 212 and the rod 213 is formed in the blind rivet nut 21, the sealing member 22 covers one end of the through hole 211 far away from the head 212, and the sealing member is an elastic sealing member. The structure of the stem 213 and the seal 22 may be embodied by two specific embodiments:

in the first embodiment, the rod portion 213 includes a first rod 2131 and a second rod 2132 connected to each other, both ends of the first rod 2131 are connected to the head 212 and the second rod 2132, respectively, the second rod 2132 may include a transition rod 21321 and a connecting rod 21322, both ends of the transition rod 21321 are connected to the connecting rod 21322 and the first rod 2131, respectively, and the cross-sectional dimension of the transition rod 21321 is gradually reduced from the first rod 2131 to the connecting rod 21322. The seal 22 has a dimension in the first direction that is less than the dimension of the first stem 2131 in the first direction. The sealing member 22 includes a blocking portion 221 and a connecting portion 222, wherein the blocking portion 221 is covered on the through hole 211, and the connecting portion 222 is sleeved on the outer wall surface 213221 of the second rod 2132.

In a second embodiment, the seal 22 includes an abutting portion 223 and a protruding portion 224 connected to each other, the protruding portion 224 protruding into the through hole 211 and being in interference fit with the through hole 211, and the abutting portion 223 abutting against an end of the stem portion 213 remote from the head portion 212.

Referring to fig. 6, 7 and 11, according to some embodiments of the present application, there is provided a box 10, where the box 10 includes a frame 1, a screw member and the rivet nut assembly 2, an inner cavity 101 is formed in the frame 1, a mounting hole 102 communicating with the inner cavity 101 is formed in the frame 1, a head 212 abuts against an outer wall of the frame 1, a rod 213 extends into the inner cavity 101, and the screw member is mounted in the through hole 211 and is screwed with a screw thread on an inner wall of the through hole 211.

The frame 1 is formed by connecting profiles, which can be aluminum profiles, which are light and relatively low in cost. The section bar is hollow section bar, is formed with inner chamber 101 the inside, is provided with the mounting hole 102 of intercommunication inner chamber 101 on the outer wall of section bar, is used for installing and draws riveting nut assembly 2 on the mounting hole 102, and the screw member is installed in drawing the through-hole 211 of riveting nut assembly 2. Since the case 10 includes all embodiments of all the technical solutions of the blind rivet nut assembly 2, at least all the beneficial effects of all the embodiments are provided, and will not be described in detail herein.

According to some embodiments of the present application, a battery pack 100 is provided, where the battery pack 100 includes the case 10 and the battery module 20 disposed in the case 10. The battery module 20 includes a plurality of battery cells, and since the battery pack 100 includes all embodiments of all the above-mentioned embodiments of the case 10, at least all the beneficial effects of all the above-mentioned embodiments are not described herein.

According to some embodiments of the present application, there is provided an electric device including a housing, in which a mounting position is provided, the mounting position being used for mounting the battery pack 100. Since the power utilization device includes all embodiments of all the technical solutions of the battery pack 100, at least all the beneficial effects of all the embodiments are provided, and will not be described in detail herein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (16)

1. The utility model provides a draw and rivet nut subassembly, its characterized in that includes draws and rivet nut and sealing member, draw and rivet nut includes interconnect's head and pole portion, draw and be formed with in the rivet nut and run through the head with the through-hole of pole portion, the sealing member lid is located the through-hole is kept away from the one end of head.

2. The blind rivet nut assembly as recited in claim 1, characterized in that said stem portion comprises first and second interconnected stems, said first stem having ends respectively connected to said head and said second stem, said second stem having a cross-sectional dimension that is smaller than a cross-sectional dimension of said first stem, said seal being disposed over an outer wall surface of said second stem.

3. The blind rivet nut assembly as recited in claim 2, characterized in that said seal member comprises a blocking portion and a connecting portion connected to each other, said blocking portion being covered on said through hole, said connecting portion being sleeved on an outer wall surface of said second rod.

4. The blind rivet nut assembly as recited in claim 2, characterized in that said second rod comprises a transition rod and a connecting rod, two ends of said transition rod are respectively connected to said connecting rod and said first rod, said sealing member is sleeved on an outer wall surface of said connecting rod, and a cross-sectional dimension of said transition rod is gradually reduced from said first rod to said connecting rod.

5. The blind rivet nut assembly as recited in claim 4, characterized in that said sealing member comprises a blocking portion and a connecting portion connected to each other, said blocking portion being covered on said through hole, said connecting portion being sleeved on an outer wall surface of said connecting rod.

6. The blind rivet nut assembly as recited in any one of claims 3 or 5, characterized in that an outside diameter of said connection portion is smaller than a dimension of said first stem cross-section.

7. The blind rivet nut assembly as recited in any one of claims 1-5, characterized in that said seal is an interference fit with said stem.

8. The blind rivet nut assembly as recited in claim 1, characterized in that said seal extends at least partially into said through bore to block said through bore.

9. The blind rivet nut assembly as recited in claim 8, characterized in that said seal comprises an abutment and a projection that are connected to each other, said projection projecting into said through bore, said abutment abutting an end of said stem remote from said head.

10. A blind rivet nut assembly as claimed in claim 8 or 9, in which the seal is an interference fit with the through bore.

11. The blind rivet nut assembly as recited in any one of claims 1-5, characterized in that said seal is an elastomeric seal.

12. The blind rivet nut assembly as recited in claim 11, characterized in that said seal is a rubber member.

13. The blind rivet nut assembly as recited in any one of claims 1-5, characterized in that said through holes comprise a first through hole and a second through hole that are in communication with each other, said first through hole extending through said head portion and a portion of said stem portion, said second through hole extending through another portion of said stem portion, said second through hole having threads disposed on an inner wall thereof, said seal member being disposed over an end of said second through hole remote from said first through hole.

14. The box body is characterized by comprising a frame, a threaded piece and the rivet nut assembly according to any one of claims 1-13, wherein an inner cavity is formed in the frame, a mounting hole communicated with the inner cavity is formed in the frame, the head is abutted to the outer wall surface of the frame, the rod portion stretches into the inner cavity, and the threaded piece is mounted in the through hole and in threaded connection with the inner wall of the through hole.

15. A battery pack comprising the case of claim 14 and a battery module disposed in the case.

16. An electrical device comprising the battery pack of claim 15.