Bicycle frame middle tube structure

Abstract

The utility model relates to the field of bicycles, in particular to a bicycle frame middle tube structure which comprises an outer tube and an inner tube, the outer tube is provided with a hollow outer tube inner cavity, the inner tube is inserted into the outer tube inner cavity, a gap is reserved between the inner tube and the outer tube to form a battery bin, a battery is installed in the battery bin, and a lead of the battery penetrates out of a wire outlet hole formed in the outer tube. The inner pipe is provided with a hollow inner cavity for the seat cushion rod to be inserted, and a locking groove for the pipe bundle to lock the seat cushion rod is formed in the upper end of the inner pipe of the hollow inner cavity. The gap is reserved between the inner pipe and the outer pipe to form the battery bin, the battery is installed in the battery bin, and then the seat cushion rod is inserted into the hollow inner cavity formed in the inner pipe, so that the weight of the seat cushion rod is reduced, and the seat cushion can be adjusted up and down more conveniently; besides, the lead of the battery penetrates out of the wire outlet hole formed in the outer tube, so that the lead of the battery and the seat cushion rod are inserted into the hollow inner cavity to be separated, abrasion to the lead of the battery when the seat cushion rod is adjusted up and down is avoided, and the use safety of the lead of the battery is further improved.

Description

Technical Field

[0001] The utility model relates to the field of bicycles, in particular to a middle tube structure of a bicycle frame. Background Art

[0002] Electric bicycles are a very common means of transportation at present. Their frames mainly include a center tube, a seat tube inserted into the center tube, a front main beam tube and a rear fork. The current center tube mainly inserts a seat tube with a battery embedded in the cavity thereof, and the seat cushion can be adjusted up and down in the center tube to achieve the height adjustment of the seat cushion. However, since the seat tube and the battery are integrated, the weight of the seat tube increases, and it is very inconvenient to adjust the seat cushion up and down. Utility Model Content

[0003] The utility model aims to provide a bicycle frame middle tube structure which is convenient for adjusting the seat cushion up and down.

[0004] The utility model discloses a bicycle frame mid-tube structure, comprising an outer tube and an inner tube, wherein the outer tube is provided with a hollow outer tube inner cavity, the inner tube is inserted in the outer tube inner cavity, a gap is reserved between the inner tube and the outer tube to form a battery compartment, a battery is installed in the battery compartment, the lead wires of the battery pass through the lead holes provided in the outer tube, the inner tube is provided with a hollow inner cavity for inserting a seat rod, and a locking groove for locking the seat rod with a tube bundle is provided at the upper end of the inner tube of the hollow inner cavity.

[0005] The bicycle frame mid-tube structure described in the utility model forms a battery compartment by reserving a gap between the inner tube and the outer tube, and the battery is installed in the battery compartment. Then, the seat rod is inserted into the hollow inner cavity provided in the inner tube, thereby reducing the weight of the seat rod and making it more convenient to adjust the seat up and down. In addition, since a locking groove for a tube bundle to lock the seat rod is provided at the upper end of the inner tube, the seat rod can be locked at different heights by squeezing and deforming the upper end of the inner tube on the locking groove by the tube bundle, thereby facilitating the up and down adjustment of the seat. In addition, since the battery lead passes through the outlet hole provided in the outer tube, the battery lead is separated from the seat rod inserted into the hollow inner cavity, thereby avoiding the wear of the battery lead when the seat rod is adjusted up and down, thereby improving the safety of the battery lead.

[0006] As a preferred solution of the utility model, a slot is provided on the battery, and a card inserted into the slot is provided on the outer wall of the inner tube in the battery compartment, and the card extends from the outer wall of the inner tube to the inner wall of the outer tube to securely connect the inner tube and the outer tube.

[0007] As a preferred solution of the utility model, two opposite slots are provided on the battery, and the outer wall of the inner tube in the battery compartment is provided with cards respectively inserted into the two slots, and the cards extend from the outer wall of the inner tube to the inner wall of the outer tube to securely connect the inner tube and the outer tube.

[0008] As a preferred solution of the utility model, a slot with a fan-shaped transverse surface is provided on the battery, and two cards are provided on the outer wall of the inner tube. The two cards extend from the outer wall of the inner tube to the inner wall of the outer tube to securely connect the inner tube and the outer tube, and divide the reserved gap between the inner tube and the outer tube into a battery compartment and a fan-shaped area. The battery is inserted into the battery compartment, and the two side walls of the fan-shaped slot are respectively abutted against the two cards.

[0009] As a preferred solution of the utility model, a detachable card sleeve cover is provided at the upper end of the outer tube, and the card sleeve cover closes the battery cover in the battery compartment.

[0010] As a preferred solution of the utility model, a clamp is provided at the upper end of the outer tube for detachably inserting the inner tube and the battery into the inner cavity of the outer tube.

[0011] As a preferred solution of the utility model, an elastic clamp is provided on the clamp, and a clamping hole is provided on the upper end of the outer tube matching with the elastic clamp.

[0012] As a preferred solution of the utility model, a battery bottom cover is provided at the bottom of the battery compartment, and an electrode column is provided on the battery bottom cover, one end of the electrode column is electrically connected to the battery lead, and the other end is electrically connected to the electrode column clamping position provided at the bottom of the battery.

[0013] As a preferred solution of the utility model, a bottom cover threaded hole is provided on the battery bottom cover, and an outer tube threaded hole is provided on the outer tube corresponding to the bottom cover threaded hole. The bolt passes through the outer tube threaded hole and is screwed into the bottom cover threaded hole to fix the battery bottom cover in the outer tube.

[0014] As a preferred solution of the utility model, the upper end of the inner tube extends out of the outer tube to form an extended end portion, and the locking groove is arranged on the extended end portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the mid-tube structure of a bicycle frame of the utility model;

[0016] Figure 2 for Figure 1 Partial schematic diagram of Part A;

[0017] Figure 3 for Figure 1 Partial schematic diagram of Part B;

[0018] Figure 4 This is a schematic diagram of the structure of a battery according to an embodiment of the utility model;

[0019] Figure 5 A top view of a tube in one embodiment of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of a battery in another embodiment of the utility model;

[0021] Figure 7 A top view of a tube in another embodiment of the utility model;

[0022] Figure 8 It is a schematic diagram of the structure of the battery bottom cover;

[0023] Fig. 9 A schematic diagram of installing a seat rod on the mid-tube structure of a bicycle frame according to the utility model;

[0024] Fig.10 It is a schematic diagram of another embodiment of the mid-tube structure of a bicycle frame of the utility model;

[0025] Fig.11 for Fig.10 Partial schematic diagram of part C;

[0026] Fig.12 for Fig.10 Partial schematic diagram of section D;

[0027] Fig.13 The utility model is a schematic diagram of installing a seat rod on the mid-tube structure of a bicycle frame. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the present utility model, it needs to be explained that if there are directional indications involved in the embodiments of the present utility model (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In one embodiment, the bicycle frame mid-tube structure is as follows: Figure 1 - Figure 3 As shown, it includes an outer tube 1 and an inner tube 2, the outer tube is provided with a hollow outer tube inner cavity 3, the inner tube is inserted in the outer tube inner cavity, a gap is reserved between the inner tube and the outer tube to form a battery compartment 4, a battery 5 is installed in the battery compartment, the lead of the battery passes through the outlet hole 6 provided in the outer tube, the inner tube is provided with a hollow inner cavity 7 for inserting the seat cushion rod, and a locking groove 8 for the tube bundle to lock the seat cushion rod is provided at the upper end of the inner tube of the hollow inner cavity.

[0031] The upper end of the inner tube extends out of the outer tube to form an extended end portion, and a locking groove 18 is arranged on the extended end portion, which makes it easier to operate the tube bundle to lock the seat rod. The middle tube is also connected to the front main beam tube 18, the rear fork 19 and the five-way 20.

[0032] like Figure 4 , Figure 6 , Figure 8 and Fig. 9 As shown, a battery bottom cover 15 is provided at the bottom of the battery compartment, and an electrode column 16 is provided on the battery bottom cover, one end of the electrode column is electrically connected to the battery lead, and the other end is electrically connected to the electrode column clamping position 17 provided at the bottom of the battery. The circuit is connected through the electrode column on the battery bottom cover and the electrode column clamping position at the bottom of the battery, so that the battery can be easily output through the battery lead. A bottom cover threaded hole is provided on the battery bottom cover, and an outer tube threaded hole is provided on the outer tube corresponding to the bottom cover threaded hole. The battery bottom cover is fixed in the outer tube by passing a bolt through the outer tube threaded hole and screwing it into the bottom cover threaded hole, so that the battery bottom cover can be better fixed in the outer tube.

[0033] In another embodiment, a slot 10 is provided on the battery, and a card 9 inserted into the slot is provided on the outer wall of the inner tube in the battery compartment, and the card extends from the outer wall of the inner tube to the inner wall of the outer tube to connect the inner tube and the outer tube. The card 9 can not only fix the battery, but also connect the inner tube and the outer tube into a whole, which is convenient for adjusting the seat rod. Figure 4 and Figure 5 As shown, two opposite slots 10 may be provided on the battery, and the outer wall of the inner tube in the battery compartment is provided with cards 9 respectively inserted into the two slots, and the cards extend from the outer wall of the inner tube to the inner wall of the outer tube to connect the inner tube and the outer tube; the inner tubes can be effectively fixed to each other through the two cards; in addition, by inserting the slots on the battery in coordination with the cards, the battery can be detachably installed in the battery compartment, which is convenient for installation; in addition, a detachable card sleeve cover 11 is provided at the upper end of the outer tube, and the card sleeve cover closes the battery cover in the battery compartment, and the slots on the battery are inserted in coordination with the cards to effectively fix the battery in the battery compartment, thereby preventing shaking and providing higher safety. Figure 6 and Figure 7 As shown, a slot 10 with a fan-shaped transverse surface can also be provided on the battery, and two cards 9 are provided on the outer wall of the inner tube. The two cards extend from the outer wall of the inner tube to the inner wall of the outer tube to securely connect the inner tube and the outer tube, and divide the reserved gap between the inner tube and the outer tube into a battery compartment and a fan-shaped area. The battery is inserted into the battery compartment, and the two side walls of the fan-shaped slot are respectively against the two cards.

[0034] In another embodiment, if Fig.10 - Fig.13As shown, the upper end of the outer tube is provided with a clamp 12 for inserting the inner tube and the battery detachably into the inner cavity of the outer tube. An elastic clamp 13 is provided on the clamp, and a clamp hole 14 is provided on the upper end of the outer tube that matches the elastic clamp. The elastic clamp 13 on the clamp matches the clamp hole on the outer tube, so that the inner tube and the battery can be conveniently inserted into the inner cavity of the outer tube for fixing and removal. The elastic clamp 13 can be configured to have an elastic pressing portion and an elastic column, and the elastic column is pressed into the clamp hole by the elastic pressing portion, and the elastic column is pressed again to be released from the clamp hole.

[0035] The above embodiments are only used to illustrate the detailed scheme of the utility model. The utility model is not limited to the above detailed scheme, that is, it does not mean that the utility model must rely on the above detailed scheme to be implemented. Those skilled in the art should understand that any improvement to the utility model, equivalent replacement of various raw materials of the utility model product, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the utility model.

Claims

1. A bicycle frame mid-tube structure, characterized in that: The invention comprises an outer tube (1) and an inner tube (2), wherein the outer tube is provided with a hollow outer tube inner cavity (3), the inner tube is inserted into the outer tube inner cavity, a gap is reserved between the inner tube and the outer tube to form a battery compartment (4), a battery (5) is installed in the battery compartment, and the lead wires of the battery pass through the lead holes (6) provided in the outer tube, the inner tube is provided with a hollow inner cavity (7) for inserting a seat cushion rod, and a locking groove (8) is provided at the upper end of the inner tube of the hollow inner cavity for locking the seat cushion rod with a tube bundle.

2. The bicycle frame mid-tube structure according to claim 1, characterized in that: A slot (10) is provided on the battery, and a card (9) inserted into the slot is provided on the outer wall of the inner tube in the battery compartment, wherein the card extends from the outer wall of the inner tube to the inner wall of the outer tube to securely connect the inner tube and the outer tube.

3. The bicycle frame mid-tube structure according to claim 1, characterized in that: Two opposite slots (10) are provided on the battery, and the outer wall of the inner tube in the battery compartment is provided with cards (9) respectively inserted into the two slots, wherein the cards extend from the outer wall of the inner tube to the inner wall of the outer tube to securely connect the inner tube and the outer tube.

4. The bicycle frame mid-tube structure according to claim 1, characterized in that: A slot (10) having a fan-shaped transverse surface is provided on the battery, and two clips (9) are provided on the outer wall of the inner tube. The two clips extend from the outer wall of the inner tube to the inner wall of the outer tube to securely connect the inner tube with the outer tube, and the reserved gap between the inner tube and the outer tube is divided into a battery compartment and a fan-shaped area. When the battery is inserted into the battery compartment, the two side walls of the fan-shaped slot are respectively abutted against the two clips.

5. The bicycle frame mid-tube structure according to claim 1, characterized in that: A detachable clamping cover (11) is provided at the upper end of the outer tube, and the clamping cover closes the battery cover in the battery compartment.

6. The bicycle frame mid-tube structure according to claim 1, characterized in that: The upper end of the outer tube is provided with a clamp (12) for detachably inserting the inner tube and the battery into the inner cavity of the outer tube.

7. The bicycle frame mid-tube structure according to claim 6, characterized in that: An elastic clamping piece (13) is provided on the clamping hoop, and a clamping hole (14) is provided on the upper end of the outer tube that matches the elastic clamping piece.

8. The bicycle frame mid-tube structure according to claim 1, characterized in that: A battery bottom cover (15) is provided at the bottom of the battery compartment, and an electrode column (16) is provided on the battery bottom cover, wherein one end of the electrode column is electrically connected to the battery lead, and the other end is electrically connected to an electrode column clamping position (17) provided at the bottom of the battery.

9. The bicycle frame mid-tube structure according to claim 8, characterized in that: The battery bottom cover is provided with a bottom cover threaded hole, and the outer tube corresponding to the bottom cover threaded hole is provided with an outer tube threaded hole. The bolt passes through the outer tube threaded hole and is screwed into the bottom cover threaded hole to fix the battery bottom cover in the outer tube.

10. The bicycle frame mid-tube structure according to claim 1, characterized in that: The upper end of the inner tube extends out of the outer tube to form a protruding end portion, and a locking groove is arranged on the protruding end portion.

Images