CN212473769U - Mounting structure of battery box base - Google Patents
Mounting structure of battery box base Download PDFInfo
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- CN212473769U CN212473769U CN202020929211.4U CN202020929211U CN212473769U CN 212473769 U CN212473769 U CN 212473769U CN 202020929211 U CN202020929211 U CN 202020929211U CN 212473769 U CN212473769 U CN 212473769U
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Abstract
The utility model discloses a mounting structure of a battery box base, which comprises a frame lower pipe, a base and a connecting screw, wherein an open slot for accommodating a battery box is formed on the side wall of the frame lower pipe, an inner convex structure protruding along the radial direction is formed on the inner side wall of the frame lower pipe, a positioning plane vertical to the axial direction of the frame lower pipe is formed on the end surface of the inner convex structure in the frame lower pipe, the cutting plane of the positioning plane and the frame lower pipe forming the open slot has a set retraction distance along the axial direction of the frame lower pipe, an axial connecting screw hole is arranged on the positioning plane, the base is inserted into the frame lower pipe, one end of the base forms a contact plane which is tightly abutted against the positioning plane, a radial connecting screw hole is arranged on the side wall of the frame lower pipe, a connecting perforation is arranged on the base, a stud of the connecting screw penetrates through the connecting perforation and is finally, the tapping difficulty is reduced, and the mounting precision of the base and the connection strength of the base and the lower pipe of the frame are improved.
Description
Technical Field
The utility model relates to an electric motor car, in particular to mounting structure of battery box base.
Background
The mounting structure of traditional intraductal battery box base under the electric motor car does: and extruding and forming a screw column in the lower pipe sectional material at one time, then tapping threads on the screw column, attaching the base to a tangent plane of an open slot formed by the lower pipe, and then fastening the screw to realize the installation of the base. This structure has the following disadvantages:
1. because the lower tube is slotted in the open slot, the end face of the screw column is of an inclined plane structure, the difficulty of tapping threads on the inclined plane is high, and the screw column can be processed in enough space, so that the design of a product is limited, and the manufacturing cost is increased.
2. When the base was installed on the low tube, generally required base surface and incision face parallel and level, like this, one shot forming's screw post precision is difficult to reach the assembly requirement, often leads to base surface and incision plane to be difficult to complete parallel and level.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model provides a mounting structure of battery box base, this battery box base's mounting structure can reduce the pedestal mounting degree of difficulty, improves pedestal mounting precision, the later stage battery case installation of being convenient for.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: a mounting structure of a battery box base comprises a frame lower pipe, a base and a connecting screw, wherein an open slot for accommodating a battery box is formed on the side wall of the frame lower pipe, an inner convex structure protruding along the radial direction is formed on the inner side wall of the frame lower pipe, a positioning plane vertical to the axial direction of the frame lower pipe is formed on the end face, facing one end of the open slot, of the inner convex structure in the frame lower pipe, a tangent plane of the positioning plane and the frame lower pipe forming the open slot has a set inward shrinkage distance along the axial direction of the frame lower pipe, an axial connecting screw hole extending along the axial direction of the frame lower pipe is formed on the positioning plane, one axial end of the base can be inserted into the frame lower pipe, a contact plane matched with the positioning plane is formed at one axial end of the base, the contact plane tightly abuts against the positioning plane of the inner convex structure in the frame lower, the base is provided with a connecting through hole which is opposite to the radial connecting screw hole and the axial connecting screw hole, and a stud of the connecting screw penetrates through the connecting through hole and is finally connected with the radial connecting screw hole and the axial connecting screw hole in a threaded mode.
As a further improvement, the inward convex structure is an axially extended strip-shaped structure integrally formed on the inner side wall of the lower tube of the frame when being extruded.
As a further improvement of the utility model, interior convex structure is close to frame low tube axle center one side and forms ring columnar structure, and the axial connection screw is just located this ring columnar structure and is inboard towards open slot direction one end.
As a further improvement of the utility model, an opening communicating the inside and the outside is formed on the side wall of the annular columnar structure of the inward convex structure.
As a further improvement of the utility model, the ring column structure of the inner convex structure is formed with a crack arrest groove just right to the opening.
As a further improvement, an axial boss is formed on a terminal surface of the inner convex structure facing the open slot, a positioning groove axially extending is arranged on one end of the base, and the axial boss of the inner convex structure facing one end of the open slot can be just inserted into the positioning groove arranged on one end of the base.
As a further improvement, the inboard protruding structural axial boss of frame low tube is located the root that protruding structure and frame low tube inside wall linked up in, and the constant head tank that the base was served forms open-ended open structure on being the lateral wall.
As a further improvement, the inner convex structure upper axial boss end surface of the inner side of the frame lower pipe is aligned with the tangent plane of the open slot formed by the frame lower pipe.
As a further improvement, the frame lower tube is located open slot bottom surface one side and forms double-layer side wall structure, and the radial connection screw is located this double-layer side wall structure's inlayer lateral wall.
As a further improvement of the utility model, the connection perforation on the base is the counter sink, and the connection screw head can hold in the counter sink of counter sink completely.
The utility model has the advantages that: the utility model discloses a set up extrusion integrated into one piece's interior convex structure on frame low tube inside wall, and with this interior convex structure towards open slot one end formation step face, attack the tooth operation on the plane, the precision of attacking the tooth has been improved, the tooth degree of difficulty and the processing cost have been reduced, and simultaneously, the base carries out axial positioning by the step face and has improved its and frame low tube formation open slot's plane degree, guaranteed that the battery case installation is smooth and the operation is light, and simultaneously, interior convex structure is gone up and is added in the constant head tank that the axial bulge inserted the base man-hour at the step face, the direction of pedestal mounting and the location of circumferencial direction have been realized, further improved pedestal mounting precision and with the joint strength of frame low tube, avoid the connecting screw to receive shear force damage.
Drawings
Fig. 1 is an exploded view of the structure principle of the present invention;
FIG. 2 is a perspective view of the base of the present invention;
FIG. 3 is a front view of the structure principle of the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
FIG. 5 is an enlarged view of the portion C of FIG. 4;
FIG. 6 is a sectional view taken along line B-B of FIG. 3;
fig. 7 is a perspective view of the lower tube of the frame of the present invention.
Detailed Description
Example (b): a mounting structure of a battery box 13 and a base 2 comprises a frame lower tube 1, a base 2 and a connecting screw 3, wherein an open slot 4 for accommodating the battery box 13 is formed on the side wall of the frame lower tube 1, an inner convex structure 5 protruding along the radial direction is formed on the inner side wall of the frame lower tube 1, a positioning plane 6 vertical to the axial direction of the frame lower tube 1 is formed on the end surface of one end, facing the open slot 4, of the inner convex structure 5 in the frame lower tube 1, a set retraction distance exists between the positioning plane 6 and the frame lower tube 1 along the axial direction of the frame lower tube 1 on the tangent plane of the open slot 4 formed by the positioning plane 6 and the frame lower tube 1, an axial connecting screw hole extending along the axial direction of the frame lower tube 1 is arranged on the positioning plane 6, one axial end of the base 2 can be just inserted into the frame lower tube 1, a contact plane 14 matched with the positioning plane 6 is formed at one axial end, the side wall of the lower frame tube 1 is provided with a radial connecting screw hole extending along the radial direction, the base 2 is provided with a connecting through hole 7 opposite to the radial connecting screw hole and the axial connecting screw hole, and a stud of the connecting screw 3 penetrates through the connecting through hole 7 and is finally connected with the radial connecting screw hole and the axial connecting screw hole in a threaded mode. An inward convex structure 5 is formed on the inner side of a frame lower pipe 1, a positioning plane 6 vertical to the axial direction is formed on the inward convex structure 5, a contact plane 14 matched with the positioning plane 6 is formed on a base 2, one end of the base 2 is inserted into the frame lower pipe 1 during assembly, the contact plane 14 on one end of the base 2 is tightly contacted with the positioning plane 6 of the inward convex structure 5 in the frame lower pipe 1, the axial positioning of the base 2 is realized, the alignment of the mounting rear surface of the base 2 and the side wall tangent plane of an open slot 4 formed on the frame lower pipe 1 can be fully ensured, meanwhile, as the inward convex structure 5 in the frame lower pipe 1 is provided with an axial connecting screw hole on the plane, the processing of the screw hole is convenient, the screw hole is prevented from being punched on the inclined plane, the processing precision of the axial connecting screw hole is ensured, the processing difficulty is reduced, and the assembling precision and stability of, make on the frame low tube 1 when installing battery case 13 light, smooth and easy, avoid leading to battery case 13 to install and dismantle because of base 2 installation error to have the card system phenomenon.
The inner convex structure 5 is a strip-shaped structure which is integrally formed on the inner side wall of the lower frame tube 1 and extends along the axial direction during extrusion forming. Interior convex structure 5 at 1 extrusion in-process of frame low tube with one integrated into one piece shaping, the shaping is convenient, avoid the secondary equipment, it is connected stably with frame low tube 1 simultaneously, joint strength is high, the mode through machining behind the 1 extrusion of frame low tube forms open slot 4 that is used for installing battery case 13, frame low tube 1 lateral wall that forms open slot 4 forms the inclined plane incision, the mode of rethread machining mills processing to interior convex structure 5, make it form locating plane 6 towards open slot 4 one side, finally on locating plane 6 attack the tooth can, interior convex structure 5 carries out locating plane 6 towards open slot 4 one end and mills man-hour, the depth of working can design according to base 2.
One side of the inward convex structure 5, which is close to the axle center of the frame lower pipe 1, forms an annular columnar structure 8, and the axial connecting screw hole is just positioned at the inner side of one end of the annular columnar structure 8, which faces the direction of the open slot 4. When the inward-convex structure 5 is formed, the ring columnar structure 8 is preformed, so that the axial connection screw hole can be conveniently and accurately tapped.
The side wall of the annular columnar structure 8 of the inner convex structure 5 is provided with an opening 9 for communicating the inside and the outside. The structure realizes that the axial connecting screw hole has certain elasticity, and avoids the occurrence of sliding teeth after the screw is locked.
And a crack arrest groove 10 opposite to the opening is formed on the inner side of the annular columnar structure 8 of the inner convex structure 5. The anti-cracking groove 10 can prevent the side wall of the ring columnar structure 8 from cracking when the axial connecting screw hole is locked into the connecting screw 3.
An axial boss 12 is formed on one end face, facing the open slot 4, of the inward convex structure 5, an axially extending positioning slot 11 is formed in one end of the base 2, and the axial boss 12, facing the open slot 4, of the inward convex structure 5 is just capable of being inserted into the positioning slot 11 in one end of the base 2. The inward convex structure 5 realizes the positioning and fool-proofing of the base 2 by arranging the axial boss 12, and meanwhile, the connection strength of the base 2 and the frame lower pipe 1 is improved.
The axial boss 12 on the inner convex structure 5 at the inner side of the frame lower pipe 1 is positioned at the root part of the inner convex structure 5 connected with the inner side wall of the frame lower pipe 1, and the positioning groove 11 at one end of the base 2 is an opening structure with an opening formed on the side wall. The structure not only facilitates the milling processing of the positioning plane 6 on the inward convex structure 5 integrally formed with the frame lower pipe 1, but also realizes the positioning of the base 2 in the circumferential direction and avoids the mutual interference.
The end surface of an axial boss 12 on the inner convex structure 5 at the inner side of the frame lower pipe 1 is aligned with the tangent plane of an opening groove 4 formed on the frame lower pipe 1.
The frame lower pipe 1 is positioned on one side of the bottom surface of the open slot 4 to form a double-layer side wall structure, and the radial connecting screw hole is positioned on the inner side wall of the double-layer side wall structure. The structure can improve the strength of the lower frame tube 1, simultaneously ensures that no hole is formed on the surface of the lower frame tube 1, and improves the strength and the attractiveness of the lower frame tube 1.
The connecting through hole 7 on the base 2 is a countersunk hole, and the head of the connecting screw 3 can be completely accommodated in the countersunk hole.
Claims (10)
1. The utility model provides a mounting structure of battery box base, includes frame low tube (1), base (2) and connecting screw (3), be formed with open slot (4) that supply battery box (13) to hold on the frame low tube lateral wall, its characterized in that: an inward convex structure (5) which protrudes along the radial direction is formed on the inner side wall of the lower frame tube, a positioning plane (6) which is vertical to the axial direction of the lower frame tube is formed on the end surface of the inward convex structure in the lower frame tube, which faces one end of the open slot, the section of the open slot formed by the positioning plane and the lower tube of the frame has a set retraction distance along the axial direction of the lower tube of the frame, the positioning plane is provided with an axial connecting screw hole which extends along the axial direction of the lower tube of the frame, one axial end of the base can be just inserted into the lower tube of the frame, and one axial end of the base forms a contact plane (14) which is matched with the positioning plane, the contact plane tightly abuts against a positioning plane of an inward convex structure in the lower tube of the frame, a radial connecting screw hole extending along the radial direction is arranged on the side wall of the lower tube of the frame, a connecting through hole (7) opposite to the radial connecting screw hole and the axial connecting screw hole is arranged on the base, and a stud of the connecting screw penetrates through the connecting through hole and is finally connected with the radial connecting screw hole and the axial connecting screw hole in a threaded mode.
2. The mounting structure of a battery cartridge base according to claim 1, wherein: the inner convex structure is a strip-shaped structure which is integrally formed on the inner side wall of the lower tube of the frame in an extrusion forming mode and extends along the axial direction.
3. A mounting structure for a battery pack holder according to claim 2, wherein: one side of the inward convex structure, which is close to the axle center of the lower pipe of the frame, forms a ring-shaped columnar structure (8), and the axial connecting screw hole is just positioned at the inner side of one end of the ring-shaped columnar structure, which faces to the direction of the open slot.
4. The mounting structure of a battery cartridge base according to claim 3, wherein: an opening (9) for communicating the inside and the outside is formed on the side wall of the annular columnar structure of the inner convex structure.
5. The mounting structure of a battery cartridge base according to claim 4, wherein: and a crack arrest groove (10) opposite to the opening is formed on the inner side of the annular columnar structure of the inner convex structure.
6. The mounting structure of a battery cartridge base according to claim 1 or 2, characterized in that: an axial boss (12) is formed on one end face, facing the open slot, of the inward convex structure, a positioning slot (11) extending axially is formed in one end of the base, and the axial boss, facing one end of the open slot, of the inward convex structure can be just inserted into the positioning slot formed in one end of the base.
7. The mounting structure of a battery cartridge base according to claim 6, wherein: the axial boss on the inner convex structure on the inner side of the lower frame tube is positioned at the root part of the inner convex structure connected with the inner side wall of the lower frame tube, and the positioning groove on one end of the base is an opening structure with an opening formed on the side wall.
8. The mounting structure of a battery cartridge base according to claim 7, wherein: the end face of an axial boss on the inner convex structure on the inner side of the lower frame tube is aligned with a tangent plane of an open slot formed by the lower frame tube.
9. The mounting structure of a battery cartridge base according to claim 1, wherein: the frame lower pipe is positioned on one side of the bottom surface of the open slot to form a double-layer side wall structure, and the radial connecting screw hole is positioned on the inner side wall of the double-layer side wall structure.
10. The mounting structure of a battery cartridge base according to claim 1, wherein: the connecting through hole on the base is a countersunk hole, and the head of the connecting screw can be completely accommodated in the countersunk head of the countersunk hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020929211.4U CN212473769U (en) | 2020-05-28 | 2020-05-28 | Mounting structure of battery box base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020929211.4U CN212473769U (en) | 2020-05-28 | 2020-05-28 | Mounting structure of battery box base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212473769U true CN212473769U (en) | 2021-02-05 |
Family
ID=74411002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020929211.4U Active CN212473769U (en) | 2020-05-28 | 2020-05-28 | Mounting structure of battery box base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212473769U (en) |
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2020
- 2020-05-28 CN CN202020929211.4U patent/CN212473769U/en active Active
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