TWM604290U - Low-span shock-absorbing frame structure - Google Patents

Abstract

This model relates to a low-span shock-absorbing frame structure, which includes: a front frame, which extends diagonally forward from a motor bracket; and a shock absorber seat, which is connected to the upper side of the motor bracket In addition, the shock absorber seat system further includes a casing section, and the casing section is connected to the upper part of the motor bracket; and the casing section is provided with an upper pivot joint and a first lower pivot Joint and a second lower pivot, and the upper pivot is connected with a pivot set by a connecting rod; a shock absorber is connected to the first lower pivot of the casing section, Between the inner ends of the connecting rod; a rear frame is connected between the second lower pivot of the cover section and the outer ends of the connecting rod; the cover section presents a large thickness, according to In order to provide a large accommodating space for the shock absorber, the shock absorber can exert a better shock-absorbing effect.

Description

Low-span shock-absorbing frame structure

The model relates to a bicycle, in particular to the category of a low-span shock-absorbing frame structure of an electric bicycle.

By the way, bicycles have been widely used in cities all over the world because of their low price, convenient use, and environmental protection and energy saving functions. They are one of the necessary tools for people to go out.

At present, the conventional electric bicycle frame is composed of a front triangle frame, a middle tube, and a rear upper and lower forklift frame. Therefore, during the riding of an electric bicycle, vibration is prone to occur, and the vibration is likely to cause uncomfortable riding and fatigue, so shock absorbers are usually added to the electric bicycle frame.

However, considering many women and older riders, the electric bicycle frame has extended a low-span suspension frame. In view of the structural properties of the low-span suspension frame, the suspension must be A reinforcing piece is provided to provide the shock absorber to be installed at the rear end of the shock absorber seat.

However, the installation position of the rear shock absorber of the conventional low-span suspension frame is that its hanger is directly welded to the rear end of the middle tube to provide a shock absorber; but the hanger has multiple pivot holes and There is a phenomenon of stress concentration, which causes the strength of the hanger structure to be too weak to bear the torsion or bending moments of different dimensions, resulting in tensile stress, compressive stress and shear stress, so that the conventional low-span suspension frame will be safe to ride doubt.

For this reason, in view of the problems existing in the conventional low-span suspension frame, the creator of this new model has worked hard to develop the new low-span suspension frame structure; therefore, the main purpose of this new model is to provide better A low-span shock-absorbing frame structure with structural strength; the secondary purpose of the present invention is to provide a low-span shock-absorbing frame structure that can conveniently adjust the shock-absorbing effect.

In order to achieve the above-mentioned purpose, the new model uses the following technical means: Regarding the structure of the new low-span shock-absorbing frame, it includes: a front frame extending obliquely forward from a motor bracket; and a shock absorber seat , Is connected to the upper part of the motor bracket, and the shock absorber seat system further includes a cover section, and then the cover section is connected to the upper part of the motor bracket; in addition, the cover section is provided with a The upper pivot joint and the inside are provided with a first lower pivot joint and a second lower pivot joint, and the upper pivot joint is connected with a pivot set by a connecting rod; a shock absorber is connected to Between the first lower pivot of the cover section and the inner end of the connecting rod; and a rear frame connected between the second lower pivot of the cover section and the outer end of the connecting rod .

The thickening range of the casing section is a range of ±45 degrees of the horizontal included angle between the upper pivot joint and the middle tube section.

The shock absorber seat is connected to the casing section by a middle tube section, and the outer diameter of the middle tube section is smaller than the outer diameter of the casing section.

The middle pipe section and the casing section are set in two pieces or integrally formed.

The shock absorber seat and the motor bracket are two-piece or integrally formed.

The thickness distance (T1) of the forward extension of the casing section is greater than 1.5 times the radius (t1) of the seat tube.

The thickness distance (T2) of the casing segment extending backward is greater than 1.5 times the radius (t2) of the seat tube.

Wherein, a perforation is provided at the top of the casing section corresponding to the shock absorber, and the perforation provides the function of convenient adjustment of the shock absorber.

The new model uses the above technical means and has the following effects: 1. This new model is that the shock absorber seat of the low-span suspension frame includes the middle tube section and the cover section, and the cover section is thicker and protruding forward or/and back than the middle tube section The thickening and protruding make the shell section have a higher structural strength, and the shell section of the shock absorber seat can withstand the tensile stress, compressive stress and shear stress of various dimensions generated during riding to increase The frame is safe to ride; at the same time, a larger accommodating space is provided to accommodate the shock absorber, so that a better angle between the shock absorber and the shock absorber seat can be obtained, thereby improving the shock absorption performance. 2. In the new model, the casing section is provided with the perforation at the top of the shock absorber, allowing the user to adjust the shock absorber through the perforation. For example, the shock absorber can be adjusted according to the riding habits of the user The K value.

First of all, please refer to Figures 1 to 5. The present invention relates to a low-span shock-absorbing frame structure, which is used as a low-span shock-absorbing frame of an electric bicycle. The low-span shock-absorbing frame A series It includes: a front frame 1, a motor bracket 2, a shock absorber seat 3, a connecting rod 4, a shock absorber 5, and a rear frame 6, which are described in detail below with the drawings.

The front frame 1 extends obliquely forward from a motor bracket 2; the shock absorber seat 3 is connected to the upper side of the motor bracket 2, and the shock absorber seat 3 is A middle pipe section 32 is connected to a housing section 31, and the housing section 31 is connected to the upper part of the motor bracket 2; in addition, the housing section 31 is provided with an upper pivot joint 311 and a first lower The pivot joint 312 and a second lower pivot joint 313 are connected to the upper pivot joint 311 with a pivot 41 provided by the connecting rod 4. In particular, the middle pipe section 32 and the casing section 31 are made of two pieces or integrally formed, and the shock absorber base 3 and the motor bracket 2 are of two pieces or integrally formed.

And the outer diameter of the middle pipe section 32 is smaller than the outer diameter of the casing section; in addition, a perforation 314 is provided at the top of the casing section 31 corresponding to the shock absorber 5, and the perforation 314 provides a convenient function for adjusting the shock absorber 5 By.

The shock absorber 5 is connected between the first lower pivot 312 of the cover section 31 and the inner end 42 of the connecting rod 4; the rear frame 6 is connected to the cover section 31 Between the second lower pivot joint 313 and the outer end 43 of the connecting rod 4.

Please refer to Figures 5-7 again. The middle pipe section 32 is connected to the seat tube 7. The present invention provides the best solution for the installation position of the shock absorber in the low-span shock absorber frame structure: The cover section 31 of the shock absorber seat 3 presents a large thickness, so that the thickening range of the cover section 31 is the horizontal angle between the upper pivot joint 311 and the middle 41 tube within ±45 degrees; The thickness distance (T1) of the casing section 31 extending forward is greater than 1.5 times the radius (t1) of the seat tube 7; or/and the thickness distance (T2) of the casing section 31 extending backward is larger than the radius (t1) of the seat tube 7 ( 1.5 times of t1), thereby providing a large accommodating space for the shock absorber 5 so that the shock absorber 5 can exert a better shock-absorbing effect.

For example: if the outer diameter of the seat tube 7 of the shock absorber seat 3 is set to ψ31.6mm, and its radius is ψ15.8mm, the forward thickening and reinforcement distance of the casing section 31 is 15.8x1.5=23.7mm ( The thick line part of the front end of the housing section 31 as shown in Figure 5); if the outer diameter of the seat tube 7 is set to ψ31.6mm, its radius is ψ15.8mm, and the rearward thickening reinforcement distance is 15.8x1.5=23.7mm (Figure 6 of the back end of the housing section 31).

Therefore, the present invention can achieve the following surgical effects: Compared with the middle tube section 32, the casing section 31 is thickened and protruded forward or/and thickened and protruded backward, so that the casing section 31 has a higher structural strength. , Even though the casing section 31 has multiple pivot holes 311; 313, the casing section 31 of the shock absorber seat 3 is sufficient to withstand the tensile stress caused by the torsion or bending moment of various dimensions generated during riding , Compressive stress and shear stress, to effectively improve the riding safety of the frame; at the same time, provide a larger accommodating space to accommodate the shock absorber 5, so that the shock absorber 5 and the shock absorber seat 3 can be better According to the included angle, the shock-absorbing performance is improved; in addition, the casing section 31 corresponding to the top of the shock absorber 5 is provided with the perforation 314 in the present invention, so that the user can adjust the shock absorber 5 through the perforation 314, for example, The K value of the shock absorber 5 can be adjusted according to the riding habits of the user.

In summary, this new model is about a "low-span suspension frame structure", and its constituent structure has not been seen in books or publicly used. It is in compliance with the requirements of a patent application. I sincerely ask Jun Bureau to approve the patent as soon as possible. prayer;

For those who need to be clarified, the above are the specific embodiments of the patent application and the technical principles used. If the concept of the patent application is changed, the resulting function still does not exceed the specification and drawings. All the spirits covered should be stated within the scope of this patent application.

A: Low-span suspension frame 1: Front frame 2: Motor bracket 3: shock absorber seat 31: Shell section 311: Upper pivot 312: The first lower pivot 313: second lower hinge 314: Piercing 32: Middle section 4: connecting rod 41: branch 42: inside end 43: Outer end 5: shock absorber 6: Rear frame 7: seat tube T1: thickness distance T2: thickness distance t1: thickness distance t2: thickness distance

Figure 1: This is the three-dimensional appearance of the new low-span suspension frame structure. Figure 2: This is an exploded view of the new low-span suspension frame structure. Figure 3: This is another exploded view of the new low-span suspension frame structure. Figure 4: This is a cross-sectional view of the new low-span suspension frame structure. Figure 5: This is a schematic diagram of the forward thickening of the cover section of the new shock absorber seat. Figure 6: This is a schematic diagram of the rear thickening of the casing section of the new shock absorber seat. Figure 7: is a schematic diagram of the thickened angle range of the casing section of the new shock absorber seat.

A: Low-span suspension frame

1: Front frame

2: Motor bracket

3: shock absorber seat

31: Shell section

311: Upper pivot

312: The first lower pivot

313: The second lower hinge

314: Piercing

32: Middle section

4: connecting rod

41: branch

42: inside end

43: Outer end

5: shock absorber

6: Rear frame

7: seat tube

Claims (8)

A low-span shock-absorbing frame structure, which includes: A front frame, which extends diagonally forward from a motor bracket; A shock absorber seat is connected to the upper part of the motor bracket, and the shock absorber seat further includes a cover section, and the cover section is connected to the upper part of the motor bracket; The cover section is provided with an upper pivot joint, a first lower pivot joint and a second lower pivot joint inside, and a pivoting position of a connecting rod is connected to the upper pivot joint; A shock absorber connected between the first lower pivot of the casing section and the inner end of the connecting rod; and A rear frame connected between the second lower pivot of the cover section and the outer end of the connecting rod; As the casing section presents a large thickness shape, a large accommodating space for the shock absorber is provided, so that the shock absorber can exert a better shock-absorbing effect. According to the low-span shock-absorbing frame structure of claim 1, wherein the thickening range of the cover section is within the range of ±45 degrees of the horizontal included angle between the upper pivot joint and the motor bracket. The low-span shock-absorbing frame structure of claim 1, wherein the motor bracket is connected to the casing section by a middle tube section, and the outer diameter of the middle tube section is smaller than the outer diameter of the casing section. According to claim 3, the low-span shock-absorbing frame structure, wherein the middle tube section and the cover section are set in two pieces or integrally formed. According to claim 3, the low-span shock-absorbing frame structure, wherein the shock absorber seat and the motor bracket are two-piece or integrally formed. According to the low-span shock-absorbing frame structure of claim 3, the thickness distance (T1) of the forward extension of the cover section is greater than 1.5 times the seat tube radius (t1). The low-span shock-absorbing frame structure of claim 3, wherein the thickness distance (T2) of the rearward extension of the cover section is greater than 1.5 times the radius (t1) of the seat tube. For example, the low-span shock absorber frame structure according to any one of claim 1 to claim 7, wherein a perforation is provided at the top end of the shock absorber corresponding to the cover section, and the perforation provides convenience for adjusting the function of the shock absorber.

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