CN217260533U

CN217260533U - Electric bicycle's built-in battery case and electric bicycle

Info

Publication number: CN217260533U
Application number: CN202120938020.9U
Authority: CN
Inventors: 易文韬
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-08-23
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses an electric bicycle's built-in battery case and electric bicycle belongs to electric bicycle technical field, aims at solving current built-in battery case installation back unstability, at the in-process that electric bicycle traveles, can rock and produce the noise because of the battery case in electric bicycle's frame, there is the abnormal sound in the electric bicycle driving process. The utility model discloses specific technical scheme is: the built-in battery box comprises a box body and is characterized in that an elastic expansion piece is arranged on the side of the box body. The utility model provides an elasticity of battery case lateral part expands the piece and can expand tightly the battery case of installing in electric motor car frame pipe, avoids the battery case to rock, noise abatement and abnormal sound completely.

Description

Electric bicycle's built-in battery case and electric bicycle

Technical Field

The utility model belongs to the technical field of electric bicycle, especially, relate to an electric bicycle's built-in battery case and electric bicycle.

Background

Electric bicycle is small, controls conveniently, does not receive the traffic jam influence, deposits the convenience, and at present, the constantly improvement of people's environmental protection consciousness, the acceleration of life rhythm, the increase of motor vehicle trip traffic pressure, electric bicycle have become the first-selected vehicle of people's short distance trip.

Along with the continuous development and maturity of lithium battery technology, electric bicycle's battery case volume is constantly dwindled, and in order to make electric bicycle's appearance brief pleasing to the eye more, the battery case assembles the built-in mounting means that hides in electric bicycle's frame pipe and has become the mainstream structure of electric bicycle battery and installation. According to the current installation standard of a battery box, a gap of 1-1.5mm is reserved between the outer wall of the battery box and the inner wall of a frame pipe, the battery box is easy to generate micro-shaking in the frame pipe, and the electric vehicle has noise abnormal sound in the advancing process.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides a solve battery case installation unstability, make electric bicycle produce the noise and have the electric bicycle's of abnormal sound problem built-in battery case and electric bicycle.

The utility model discloses a realize like this, a battery case of electric bicycle, including the box body, its characterized in that: an elastic expansion piece is arranged on the side of the box body. The bottom side circumference equipartition of box body has two at least recesses, the elasticity expands the piece and includes the elastic plate and is fixed in the convex top that expands in the box body outside on the elastic plate, the elastic plate with leave the gap between the tank bottom of recess.

In the above technical solution, preferably, the box body is a box body with four sides, a box cover is installed at the bottom end of the box body, grooves are respectively arranged on the four sides of the box cover, and the elastic plate and the expansion top are integrated with the box cover.

In the above technical solution, preferably, the end surface of the expanded top portion corresponding to the bottom of the box body is a wedge-shaped surface.

In the above technical solution, preferably, the elastic plate is an elastic plate extending from the outer side plate of the box cover to the groove direction, and the size of the expanded top protruding out of the side surface of the box body is greater than 1.5 mm.

The utility model discloses a further purpose discloses an electric bicycle, electric bicycle has the frame pipe, the frame pipe is equipped with battery chamber, its characterized in that: a battery box is assembled in the battery cavity, and the expansion top extrudes the inner wall of the frame tube.

The utility model has the advantages that:

the elasticity of battery case lateral part expands the piece and can expand tightly the battery case of installing in electric motor car frame pipe in this scheme, avoids the battery case to rock completely, noise abatement and abnormal sound.

Drawings

Fig. 1 is a schematic structural diagram of a battery box according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a mounting structure of an elastic expansion element according to a third embodiment of the present invention;

fig. 4 is a mounting structure of an elastic expansion element according to a fourth embodiment of the present invention;

in the figure, 1, a box body; 2. a box cover; 2-1, a groove; 3. an elastic expansion member; 3-1, an elastic plate; 3-2, expanding the top; 4. expanding the ball; 5. expanding the spring; 6. a ring cover; 7. v-shaped elastic sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

For solving the battery case installation unstability, make electric bicycle produce the problem that the noise exists the abnormal sound, the utility model particularly provides an electric bicycle's built-in battery case and electric bicycle can eliminate noise and abnormal sound after the battery case installation. For further explanation of the structure of the present invention, the following detailed description is made with reference to the accompanying drawings:

example one

Referring to fig. 1 and 2, a battery box for an electric bicycle includes a box body 1, in this embodiment, the box body 1 is a box body with four sides, a box cover 2 is installed at a bottom end of the box body 1, and the box cover 2 is a part of the box body. The box cover 2 is an end cover with the shape matched with the cross section of the body of the box body. An elastic expansion piece 3 is arranged on the side of the box body 1. Specifically, four side surfaces of the box cover 2 are respectively provided with a groove 2-1. The elastic expansion piece 3 comprises an elastic plate 3-1 and an expansion top part 3-2 fixed on the elastic plate 3-1 and protruding towards the outer side of the box body, and a gap is reserved between the elastic plate 3-1 and the bottom of the groove 2-1. The elastic plate 3-1 and the expansion top 3-2 are integrally constructed with the box cover 2, specifically, the elastic plate 3-1 is an elastic plate extending from the outer side plate of the box cover 2 to the direction of the groove 2-1, and the size of the expansion top 3-2 protruding out of the side surface of the box body 1 is more than 1.5mm, in this embodiment, 2 mm. The expansion top 3-2 is squeezed and the gap leaves room for the deformation of the elastic plate 3-1.

The battery box is inserted into the battery cavity from the bottom end, and the expanded top part 3-2 is extruded and the stability of the battery box is ensured. In order to enable the battery box to be inserted into the battery cavity more easily, the end face, corresponding to the bottom of the box body 1, of the expanded top portion 3-2 is a wedge-shaped face, and the wedge-shaped face prevents the expanded top portion 3-2 from being blocked with the edge of an opening of the battery cavity.

Example two

An electric bicycle is provided with a frame tube, the frame tube is provided with a battery cavity, the battery box of the embodiment I is assembled in the battery cavity, and the top expanding part extrudes the inner wall of the frame tube.

EXAMPLE III

Referring to fig. 3, in the present embodiment, the elastic expansion element includes an expansion ball 4 and an expansion spring 5. The lateral part of box body 1 is equipped with heavy groove, and bloated tight ball 4 and bloated tight spring 5 are installed in heavy groove, and is concrete, and the fixed ring lid 6 of pressure equipment bloated tight ball 4 and bloated tight spring 5 in the department of opening of heavy groove, and ring lid 6 is equipped with the ejecting hole, and bloated tight ball 4 protrusion the ring lid. The expansion spring 5 presses the expansion ball on the inner side of the expansion ball 4, so that the expansion ball 4 protrudes out of the ring cover 6, the outer end face of the ring cover 6 is positioned on the side face of the box body, and the ejection hole of the ring cover 6 is smaller than the diameter of the expansion ball 4. In this embodiment, the box body 1 has four sides, and the circumference of the sinking groove is uniformly distributed on the four sides of the box body respectively and close to the bottom end position.

Example four

Referring to fig. 4, in the embodiment, the box body 1 has four side surfaces, a sinking groove is formed at a position close to the bottom end of each side surface of the box body, the elastic expansion member is a V-shaped elastic sheet 7 fixed in the sinking groove by a screw, an outer side end of the V-shaped elastic sheet 7 protrudes out of the box body 1, and a protruding end of the V-shaped elastic sheet 7 has a round end. In this embodiment, in order to facilitate the sliding of the case into the battery cavity, the opening of the V-shaped spring 7 is opposite to the direction of the case.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides an electric bicycle's built-in battery case, includes box body (1), its characterized in that: an elastic expansion piece (3) is arranged on the side of the box body (1); the box body is characterized in that at least two grooves (2-1) are evenly distributed on the circumference of the side of the bottom of the box body (1), the elastic expansion piece (3) comprises an elastic plate (3-1) and an expansion top (3-2) fixed on the elastic plate (3-1) and protruding towards the outer side of the box body, and a gap is reserved between the elastic plate (3-1) and the bottom of the groove (2-1).

2. The built-in battery pack for an electric bicycle according to claim 1, wherein: the box body (1) is provided with four side faces, the box cover (2) is installed at the bottom end portion of the box body (1), grooves (2-1) are formed in the four side faces of the box cover (2) respectively, and the elastic plate (3-1), the expansion top portion (3-2) and the box cover (2) are integrally constructed.

3. The built-in battery pack for an electric bicycle according to claim 2, wherein: the end face of the expanded top (3-2) corresponding to the bottom of the box body (1) is a wedge-shaped face.

4. The built-in battery pack for electric bicycles of claim 3, wherein: the elastic plate (3-1) is an elastic plate extending from the outer side plate of the box cover (2) to the direction of the groove (2-1), and the size of the expansion top (3-2) protruding out of the side face of the box body (1) is larger than 1.5 mm.

5. The built-in battery pack for an electric bicycle according to claim 1, wherein: the elastic expansion piece (3) comprises an expansion ball and an expansion spring, a sinking groove is formed in the side portion of the box body (1), the expansion ball and the expansion spring are installed in the sinking groove, a ring cover for pressing the expansion ball and the expansion spring is fixed at the opening position of the sinking groove, a jacking hole is formed in the ring cover, and the expansion ball protrudes out of the ring cover.

6. The built-in battery pack for an electric bicycle according to claim 1, wherein: the elastic expansion piece (3) is a V-shaped elastic sheet.

7. An electric bicycle, electric bicycle has frame pipe, frame pipe is equipped with the battery chamber, its characterized in that: the battery compartment is fitted with a battery pack according to any one of claims 1 to 4, and the bulging portion (3-2) presses against the inner wall of the frame tube.