Assembling equipment for middle axle bowl of bicycle

Abstract

The invention relates to the technical field of bicycle assembly, and discloses bicycle center shaft bowl assembly equipment which comprises an integrally-formed support and an inclined plate at the top of the support, an assembly cavity is formed in the front side of the support, symmetrical first arc grooves are formed in the front wall of the assembly cavity, and two symmetrical positioning plates are installed in the middle of the assembly cavity; and a locking assembly for fixing the middle axle tube of the frame is arranged between the positioning plates, the left side and the right side of the inner wall of the assembling cavity are both slidably connected with L-shaped assembling bases, and the front walls of the assembling bases are rotatably connected with torsion clamping blocks. The two center shaft bowls are vertically placed on the bowl sleeve, operation is convenient, the center shaft bowls are sequentially controlled to be fixed and deflected to be in butt joint with the frame center shaft pipe and screwed in subsequently, and therefore the situation that the center shaft bowls need to be screwed into the frame center shaft pipe in advance is avoided, the installation convenience and the production efficiency are improved, and the production cost is reduced. In addition, during installation, the inclined plate is matched with the positioning plate and the locking assembly to conduct gravity fixed-point limiting and locking on the whole frame, and therefore the assembling accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle assembly, and in particular to an assembly device for a bicycle bottom bracket. Background Art

[0002] A bicycle bottom bracket cup is a crucial component in the bicycle transmission system. Typically made of metal, it has a bowl-shaped structure and is symmetrically mounted on either side of the frame's five-way tube. It works with components such as the bottom bracket axle, ball bearings, and other components to form the bottom bracket assembly. Its primary function is to provide support and positioning for the bottom bracket, ensuring smooth and stable rotation when the pedals turn, reducing friction and vibration during riding, thereby improving riding comfort and transmission efficiency. Its quality and installation precision directly impact the overall performance and lifespan of the bicycle. Currently, bicycle bottom bracket cups typically require the use of appropriate bottom bracket cup assembly equipment for installation.

[0003] The utility model with publication number CN214979090U discloses an assembly device for the bottom bracket of an electric bicycle, comprising: a workbench, a support frame, a locking assembly, and a moving assembly; the support frame is arranged on the workbench, and the frame is placed on the support frame; the locking assembly is located on both sides of the support frame, and the locking assembly includes a motor and a bowl sleeve, the motor drives the bowl sleeve to rotate, and the motor is connected to the bottom bracket through the bowl sleeve; the locking assembly is connected to the moving assembly, and the moving assembly drives the locking assembly to move horizontally. In this way, the utility model can automatically lock the bottom bracket, assemble the bottom bracket to the frame, improve assembly efficiency, and effectively ensure that the locking torque remains consistent, thereby improving the consistency of the assembly effect.

[0004] During use, the assembly equipment of the bottom bracket bowl in the above patent needs to pre-screw the bottom bracket bowl to the bottom bracket tube of the frame before the motor can be controlled to drive the bowl sleeve to dock with the bottom bracket bowl, so as to drive the bottom bracket bowl to rotate and screw into the bottom bracket tube. Since the bottom bracket bowl needs to be manually installed on both sides of the bottom bracket tube respectively, the assembly is troublesome, which increases the workload of the operator. Since the bottom bracket bowl needs to be pre-screwed, when the processing output is large, continuous and rapid operation will cause the bottom bracket bowl to be manually screwed in non-standardly, and the bottom bracket bowl will be screwed in crookedly, and this situation is not easy to detect, resulting in the subsequent failure of the motor to drive the bowl sleeve to connect with the bottom bracket bowl and need to be re-screwed, or the bottom bracket bowl will be screwed in further crookedly. Moreover, since the frame is simply placed on the front and rear support frames and lacks reliable limit, when the motor drives the bowl sleeve to connect with the bottom bracket bowl, the vibration and extrusion force at the moment of contact will also cause the frame to shift, affecting the connection effect or causing the connection assembly to fail. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems that in the use of general bicycle bottom bracket assembly equipment, the bottom bracket needs to be pre-tightened, which causes inconvenience in operation, skewed installation, and lack of stability in frame placement, resulting in poor assembly effect. The present invention provides a bicycle bottom bracket assembly device.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: The cam is secured to the chassis and has an L-shaped inner wall that is adapted to engage the chassis and to engage the chassis, wherein the cam is secured to the chassis and is adapted to engage the chassis.

[0007] Furthermore, the middle of the positioning plate has a semicircular groove adapted to the center axis tube of the frame, an empty groove for the center axis tube of the frame to be partially placed is opened between the positioning plate and the inclined plate, and the upper wall of the middle of the inclined plate has a groove adapted to the frame.

[0008] Furthermore, the locking assembly includes an arc plate rotatably connected between the two positioning plates, the rear wall of the assembly cavity is stepped and an elastic trapezoidal bar is slidably clamped on it, a hinge rod is movably connected between the elastic trapezoidal bar and the arc plate, and the left and right sides of the elastic trapezoidal bar respectively have slopes that can be squeezed by the assembly seat.

[0009] Furthermore, the upper wall of the inner cavity of the torque clamp is rotatably connected to a bevel gear sleeve, the bevel gear sleeve is fixedly connected to the bowl sleeve, the front wall of the torque clamp is rotatably connected to a driving bevel gear meshing with the bevel gear sleeve, and the driving bevel gear is driven by a motor installed on the front wall of the torque clamp.

[0010] Furthermore, a torsion spring is fixedly connected between the rear end of the torsion clamp and the assembly seat, and a movable groove corresponding to the torsion clamp is provided on the rear wall of the assembly cavity. The elastic force of the torsion spring is smaller than the elastic force of the spring telescopic rod, and the elastic force of the elastic trapezoidal bar is smaller than the elastic force of the torsion spring.

[0011] Furthermore, the top edge of the bowl sleeve is provided with a snap-fit ​​portion adapted to the central axis bowl, the middle portion of the bowl sleeve has a tubular protrusion that can extend into the central axis bowl, and the two side walls of the tubular protrusion have receiving grooves adapted to the splint.

[0012] Furthermore, a slider is slidably connected to the inner wall of the top of the tubular protrusion, a hinge plate is movably connected between the slider and the clamping plate, the bottom of the slider is rotatably connected to a T-pin rod that movably passes through the bevel gear sleeve, the T-pin rod is slidably engaged with the inner wall of the torsion clamp block, the top of the worm gear has a notch and the front and rear walls of the notch are both provided with arc grooves 2, the T-pin rod is movably engaged with the arc grooves 2, and the drive shaft is driven by motor 2 installed on the right wall of the support.

[0013] Furthermore, the front wall of the top of the assembly seat has a protrusion, and the left and right sides of the bottom of the assembly seat have shaft sleeve parts corresponding to the scroll sleeve. The protrusion cooperates with the shaft sleeve part to limit the deflection range of the torque clamp to ninety degrees, and the torque clamp has a tendency to squeeze the protrusion.

[0014] Furthermore, the center of a top of the arc groove and the shaft of the torsion clamp are at the same height.

[0015] Furthermore, sealing rings are fixedly sleeved on both sides of the drive shaft near the outer end of the sleeve portion, and a one-way air intake valve and a one-way exhaust valve are respectively provided on the upper and lower sides of the sealing ring. The one-way air intake valve is larger than the one-way exhaust valve. The outer end of the sleeve portion is fixedly connected to a sealing sleeve that is slidably clamped on the drive shaft, and the sealing ring is slidably and sealingly connected to the inner wall of the sealing sleeve.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention places the two center shaft bowls vertically on the bowl sleeve during installation, which is easy to operate. Subsequently, the driving shaft is controlled to drive the worm sleeve to adjust the worm gear to drive the clamp to fix the center shaft bowl. After it is fixed in place, as the driving shaft continues to rotate, the worm gear drives the torsion clamp to deflect as a whole, so that the center shaft bowl is turned towards the frame. During the deflection, with the restriction of a pair of pins in the arc groove, the spring telescopic rod drives the torsion clamp to squeeze the assembly seat toward the frame, and uses the elastic force of the spring telescopic rod to squeeze the center shaft bowl against both sides of the center shaft tube of the frame. The driving and controlling bowl sleeve rotates, so that the center shaft bowl is automatically screwed into the center shaft tube, thereby avoiding the need to screw the center shaft bowl into the center shaft tube of the frame in advance, thereby improving the convenience of installation and production efficiency.

[0017] 2. The present invention uses an inclined plate in conjunction with a positioning plate to limit the entire frame by gravity during installation, and then automatically drives the locking component to lock the frame center tube when the control assembly seat moves, so as to maintain the stability of the subsequent installation of the center tube, thereby ensuring that the center axis coincides with the center tube after the center bowl is deflected to the horizontal, avoiding the situation where the center bowl is installed crookedly or the center bowl is not tightly engaged due to misalignment when screwing in, thereby improving the accuracy of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure of the assembly equipment of the present invention Figure 1 ; Figure 2 The three-dimensional structure of the assembly equipment of the present invention Figure 2 ; Figure 3 is a three-dimensional cutaway view of the support portion of the assembly equipment of the present invention; Figure 4 It is a partial three-dimensional cutaway view of the assembly seat and the torsion clamp of the assembly equipment of the present invention; Figure 5 It is a three-dimensional cutaway view of the torque clamp and bowl sleeve portion of the assembly equipment of the present invention; Figure 6 It is a partial three-dimensional cutaway view of the sealing sleeve of the assembly equipment of the present invention; Figure 7 It is a three-dimensional cross-sectional exploded view of the bowl sleeve and the central shaft bowl of the assembly equipment of the present invention.

[0019] Figure numerals: 1. Support; 11. Inclined plate; 12. Arc groove one; 13. Positioning plate; 2. Arc plate; 21. Elastic trapezoidal bar; 22. Hinge rod; 3. Drive shaft; 31. Sealing ring; 32. One-way air intake valve; 33. One-way exhaust valve; 4. Assembly seat; 41. Torque clamp; 42. Bevel gear sleeve; 43. Bowl sleeve; 44. Drive bevel gear; 45. Clamp; 5. Missing worm gear; 51. Arc groove two; 52. T-pin rod; 53. Slider; 54. Hinge plate; 55. Scroll sleeve; 6. Spring telescopic rod; 61. Pin; 7. Sealing sleeve. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] Example 1, as Figure 1-Figure 7As shown, an assembly device for a bicycle axle bowl includes an integrally formed support 1 and an inclined plate 11 on the top of the support 1. The support 1 has an assembly cavity on the front side and a symmetrical arc groove 12 is opened on the front wall of the assembly cavity. Two symmetrical positioning plates 13 are installed in the middle of the assembly cavity. A locking component for fixing the axle tube of the frame is provided between the positioning plates 13. L-shaped assembly seats 4 are slidably connected to the left and right sides of the inner wall of the assembly cavity. A torsion clamp 41 is rotatably connected to the front wall of the assembly seat 4. A bowl sleeve 43 is rotatably connected to the top of the torsion clamp 41. Both sides of the middle part of the sleeve 43 are rotatably connected with splints 45, the bottom inner wall of the torsion clamp 41 is rotatably connected to the missing worm gear 5 for adjusting the splint 45, the bottom of the assembly seat 4 is rotatably connected to the volute sleeve 55 that engages with the missing worm gear 5, and the assembly cavity is rotatably connected to the driving shaft 3 that is slidably engaged in the volute sleeve 55. The driving shaft 3 is driven by the motor 2 installed on the right wall of the support 1, and the middle part of the front end of the torsion clamp 41 is fixedly connected to the spring telescopic rod 6, and the telescopic end of the spring telescopic rod 6 is provided with a pin 61 that is movably engaged with the arc groove 12.

[0022] Furthermore, the top center of the arc slot 12 and the shaft of the torsion clamp 41 are at the same height.

[0023] During installation and use, the frame is placed on the inclined plate 11, and the inclined plate 11 can be used to cooperate with the positioning plate 13 to limit the gravity of the frame as a whole. Subsequently, the two center shaft bowls are placed vertically on the bowl sleeve 43, and the control motor 2 drives the drive shaft 3 to rotate. The drive shaft 3 drives the volute sleeve 55 to rotate the worm gear 5, and the worm gear 5 adjusts the clamping plate 45 to fix the center shaft bowl. After being fixed in place, as the drive shaft 3 continues to rotate, the torsion clamp 41 is compressed and the elastic potential energy is deflected to drive the center shaft bowl to turn to the frame, and the deflection During this period, as the arc groove 12 is restricted by the pin 61, the spring telescopic rod 6 drives the torsion clamp 41 to squeeze the assembly seat 4 and push it toward the frame, until the elastic force of the spring telescopic rod 6 is used to squeeze the middle shaft bowl against both sides of the frame middle shaft tube. During this period, when the assembly seats 4 on both sides initially move toward each other, the assembly seat 4 automatically drives the locking component to lock the frame middle shaft tube to maintain the stability of the subsequent installation of the middle shaft tube, thereby ensuring that the axle center coincides with the middle shaft tube after the middle shaft bowl deflects to the horizontal, avoiding the middle shaft When the bowls are screwed in, they are not aligned with each other, which causes the bottom bracket bowl to be installed crookedly and not tightly. The worm gear 5 is controlled and transmitted continuously and stably by utilizing the sliding engagement between the volute sleeve 55 and the drive shaft 3. After the bottom bracket bowl is deflected to the horizontal, the control bowl sleeve 43 is rotated. Subsequently, after the bottom bracket bowl is squeezed and abutted against both sides of the bottom bracket tube of the frame, the bottom bracket bowl is automatically screwed into the bottom bracket tube, thereby avoiding the need to screw the two bottom bracket bowls to both sides of the bottom bracket tube of the frame in different directions in advance, thereby improving the convenience of installation and production. To improve production efficiency, after the bowl sleeve 43 drives the middle shaft bowl to be screwed into the middle shaft tube of the frame to a corresponding distance so that the middle shaft bowl cannot fall out, the spring telescopic rod 6 just stretches to restore to its normal length, and as the bowl sleeve 43 drives the middle shaft bowl to continue to be screwed in, the spring telescopic rod 6 is stretched. When the bowl sleeve 43 drives the middle shaft bowl to be screwed in and reaches the calibrated maximum torque, the middle shaft bowl is completely screwed in. After installation is completed, the drive shaft 3 is controlled to rotate in the opposite direction, and the elastic force of the torsion clamp 41 and the spring telescopic rod 6 can automatically drive the equipment to reset.

[0024] Embodiment 2, based on the above embodiment, the middle part of the positioning plate 13 has a semicircular groove adapted to the center axis tube of the frame, an empty groove for the center axis tube part of the frame is opened between the positioning plate 13 and the inclined plate 11, and the upper wall of the middle part of the inclined plate 11 is opened with a groove adapted to the frame.

[0025] When installing the frame, the empty slot between the positioning plate 13 and the inclined plate 11 facilitates the insertion of the center axis tube portion of the frame. After insertion, the frame is placed in the groove in the middle of the inclined plate 11. The groove guides the frame to prevent the frame from deviating to both sides. Due to the inclination of the frame, the frame slides down along the groove under the action of gravity, so that the center axis tube automatically abuts against the semicircular groove, thereby realizing the gravity fixed point limitation of the frame, and the pre-positioning effect is good.

[0026] Example three, based on the above example, the locking assembly includes an arc plate 2 rotatably connected between two positioning plates 13, the rear wall of the assembly cavity is stepped and an elastic trapezoidal bar 21 is slidably clamped on it, and a hinge rod 22 is movably connected between the elastic trapezoidal bar 21 and the arc plate 2, and the left and right sides of the elastic trapezoidal bar 21 respectively have slopes that can be squeezed by the assembly seat 4.

[0027] After the frame drives the middle axis tube to be pre-positioned in the semicircular groove, the arc plate 2 is just on the lower side of the outer periphery of the middle axis tube. When the assembly seats 4 on both sides move toward the frame, the assembly seats 4 on both sides respectively squeeze the slopes on the left and right sides of the elastic trapezoidal strip 21, thereby driving the elastic trapezoidal strip 21 to move downward and pulling the hinge rod 22 to rotate the arc plate 2 to the rear side of the middle axis tube, forming a relative encirclement of the middle axis tube, and the middle axis tube cannot escape from the semicircular groove. Since the frame is relatively centered during pre-positioning, the subsequent middle axis bowl is driven to deflect to a horizontal position and the rear axle center can coincide with the middle axis tube, and the movement distance of the middle axis bowls on both sides is equal, which avoids the situation where the middle axis bowls are not aligned with each other when screwed in, resulting in crooked installation and loose engagement of the middle axis bowls, and facilitates the control of the maximum torque for screwing in the middle axis bowls on both sides to be the same.

[0028] Example 4. On the basis of the above-mentioned example, the upper wall of the inner cavity of the torque clamp 41 is rotatably connected to a bevel gear sleeve 42, the bevel gear sleeve 42 is fixedly connected to the bowl sleeve 43, and the front wall of the torque clamp 41 is rotatably connected to a driving bevel gear 44 meshing with the bevel gear sleeve 42, and the driving bevel gear 44 is driven by a motor 1 installed on the front wall of the torque clamp 41.

[0029] The bevel gear 44 is driven to rotate by a motor installed on the front wall of the torque clamp 41, and the bowl sleeve 43 is driven by the bevel gear sleeve 42 to rotate the middle shaft bowl, thereby avoiding the influence of the deflection of the torque clamp 41 and the movement of the assembly seat 4 on the rotation of the middle shaft bowl.

[0030] Example 5. On the basis of the above-mentioned example, a torsion spring is fixedly connected between the rear end of the torsion clamp 41 and the assembly seat 4, and a movable groove corresponding to the torsion clamp 41 is provided on the rear wall of the assembly cavity. The elastic force of the torsion spring is smaller than the elastic force of the spring telescopic rod 6, and the elastic force of the elastic trapezoidal bar 21 is smaller than the elastic force of the torsion spring.

[0031] The arrangement of the movable groove facilitates the movement of the rear end portion of the torsion clamp 41 and facilitates the maintenance and replacement of the torsion spring; as the bowl sleeve 43 drives the middle shaft bowl to be screwed into the middle shaft tube of the frame to a corresponding distance so that the middle shaft bowl cannot be dislodged, the spring telescopic rod 6 just stretches to restore to its normal length, and as the bowl sleeve 43 drives the middle shaft bowl to continue to be screwed in, the spring telescopic rod 6 is thereby stretched. After the subsequent installation of the middle shaft bowl is completed, the drive shaft 3 is controlled to drive the missing worm gear 5 to reverse. Since the bowl sleeve 43 is still engaged with the middle shaft bowl, the missing worm gear The reversal of the wheel 5 can drive the hinge plate 54 to release the fixation on the central axis bowl first, and the design of the torsion spring force being smaller than the spring telescopic rod 6 force, the spring telescopic rod 6 can use the larger elastic force to pull the bowl sleeve 43 out of the central axis bowl first, thereby facilitating the equipment to be reset for secondary use; and the design of the elastic trapezoidal bar 21 force being smaller than the torsion spring force, the elastic trapezoidal bar 21 force is relatively small, thereby avoiding the use of the assembly seat 4 to squeeze the elastic trapezoidal bar 21 and causing interference with the use of the torsion spring and the spring telescopic rod 6.

[0032] Example 6. Based on the above example, the top edge of the bowl sleeve 43 is provided with a snap-fit ​​portion adapted to the center axis bowl, the middle portion of the bowl sleeve 43 is provided with a tubular protrusion that can extend into the center axis bowl, and the two side walls of the tubular protrusion are provided with a receiving groove adapted to the splint 45.

[0033] This design makes it easy to place the center bowl on the bowl sleeve 43, and then control the deflection of the splint 45 to squeeze and fix the center bowl, and make the center bowl and the bowl sleeve 43 stably connected, thereby ensuring that after the bowl sleeve 43 is controlled to drive the center bowl to be screwed into the center tube, there will be no slipping between the center bowl and the bowl sleeve 43.

[0034] Embodiment seven, on the basis of the above embodiment, a slider 53 is slidably connected to the inner wall of the top of the tubular protrusion, a hinge plate 54 is movably connected between the slider 53 and the clamping plate 45, the bottom of the slider 53 is rotatably connected to a T-shaped pin 52 that movably passes through the bevel gear sleeve 42, the T-shaped pin 52 is slidably engaged with the inner wall of the torsion clamp 41, the top of the missing worm gear 5 has a notch and the front and rear walls of the notch are provided with arc groove 2 51, the T-shaped pin 52 is movably engaged with the arc groove 2 51.

[0035] Initially, when the worm gear 5 is controlled to deflect toward one side of the frame, the worm gear 5 drives the T-pin rod 52 to move downward through the arc groove 2 51, pulling the slider 53 to drive the hinge plate 54 to squeeze the clamps 45 on both sides to deflect and fix the center shaft bowl. When the clamps 45 squeeze the center shaft bowl and cannot deflect further, as the worm gear 5 continues to rotate, the worm gear 5 is fixed relative to the torsion clamp 41, and drives the torsion clamp 41 to compress the torsion spring to deflect, so as to achieve the deflection of the center shaft bowl after the center shaft bowl is fixed. In addition, since the slider 53 is rotatably connected to the T-pin rod 52, the subsequent control bowl sleeve 43 drives the center shaft bowl to rotate without affecting the fixation of the center shaft bowl, which is safe and reliable.

[0036] Embodiment 8, based on the above embodiment, the front wall of the top of the assembly seat 4 has a protrusion, and the left and right sides of the bottom of the assembly seat 4 have shaft sleeve parts corresponding to the scroll sleeve 55. The protrusion cooperates with the shaft sleeve part to limit the deflection range of the torque clamp 41 to ninety degrees, and the torque clamp 41 has a tendency to squeeze the protrusion.

[0037] Through the design of the protrusion, it is convenient to use the elastic force of the torque clamp 41 itself to control the torque clamp 41 to squeeze the protrusion at the beginning, so that the torque clamp 41 is vertically upward, which is convenient for vertically placing the bottom bracket bowl. Compared with simply screwing the bottom bracket bowl onto the bottom bracket tube from both sides, the operation is easier and more convenient, which can improve work efficiency. The design of the sleeve portion makes it convenient to limit the maximum deflection angle of the torque clamp 41 to ensure that it can deflect to the horizontal, so that the axis of the bottom bracket bowl coincides with the bottom bracket tube after it deflects to the horizontal, thereby improving the accuracy of assembly.

[0038] Example 9. On the basis of the above example, sealing rings 31 are fixedly sleeved on both sides of the drive shaft 3 near the outer end of the shaft sleeve. A one-way air intake valve 32 and a one-way exhaust valve 33 are respectively provided on the upper and lower sides of the sealing ring 31. The one-way air intake valve 32 is larger than the one-way exhaust valve 33. The outer end of the shaft sleeve is fixedly connected to a sealing sleeve 7 that is slidably clamped on the drive shaft 3. The sealing ring 31 is slidably and sealedly connected to the inner wall of the sealing sleeve 7.

[0039] Through this design, when the assembly seats 4 on both sides move toward each other to assemble the central axis bowl, the sealing sleeve 7 is driven to move synchronously, so that the air on the side of the sealing sleeve 7 away from the sleeve part is pressed into the other side through the one-way exhaust valve 33. Since the one-way air intake valve 32 is larger than the one-way exhaust valve 33, the one-way exhaust valve 33 is smaller in size. Therefore, after the torsion clamp 41 is controlled to deflect to the horizontal, the spring telescopic rod 6 is compressed first, and then it can gradually restore its original length to push the assembly seat 4 to move, so that the central axis bowl can be docked with the central axis tube horizontally, and the torsion clamp 41 is avoided. The deflection drives the central axis bowl and the positioning plate 13 and the edge of the central axis tube to squeeze and rub before it can dock with the central axis tube. Correspondingly, due to the larger size of the one-way air intake valve 32, it ensures that the subsequent assembly seat 4 is reset quickly, which facilitates the equipment to be put into use quickly for the second time.

[0040] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An assembly device for a bicycle bottom bracket, comprising an integrally formed support (1) and an inclined plate (11) on the top of the support (1), characterized in that: The support (1) has an assembly cavity on the front side and a symmetrical arc groove (12) is opened on the front wall of the assembly cavity. Two symmetrical positioning plates (13) are installed in the middle of the assembly cavity. A locking component for fixing the center axis tube of the frame is provided between the positioning plates (13). The left and right sides of the inner wall of the assembly cavity are slidably connected to an L-shaped assembly seat (4). The front wall of the assembly seat (4) is rotatably connected to a torsion clamp (41). The top of the torsion clamp (41) is rotatably connected to a bowl sleeve (43). The middle of the bowl sleeve (43) is rotatably connected to clamps on both sides. The inner wall of the bottom of the torsion clamp (41) is rotatably connected to a worm gear (5) for adjusting the fixing of the clamp (45), the bottom of the assembly seat (4) is rotatably connected to a volute sleeve (55) meshing with the worm gear (5), the assembly cavity is rotatably connected to a driving shaft (3) slidably engaged in the volute sleeve (55), the front middle part of the torsion clamp (41) is fixedly connected to a spring telescopic rod (6), and the telescopic end of the spring telescopic rod (6) is provided with a pin (61) movably engaged with the arc groove (12).

2. The bicycle bottom bracket assembly device according to claim 1, characterized in that: The middle portion of the positioning plate (13) has a semicircular slot adapted to the center axis tube of the frame, an empty slot for partially inserting the center axis tube of the frame is provided between the positioning plate (13) and the inclined plate (11), and the upper wall of the middle portion of the inclined plate (11) has a groove adapted to the frame.

3. The bicycle bottom bracket assembly device according to claim 2, characterized in that: The locking assembly comprises an arc plate (2) rotatably connected between the two positioning plates (13); the rear wall of the assembly cavity is stepped and a spring trapezoidal strip (21) is slidably engaged thereon; a hinge rod (22) is movably connected between the spring trapezoidal strip (21) and the arc plate (2); and the left and right sides of the spring trapezoidal strip (21) respectively have slopes that can be squeezed by the assembly seat (4).

4. The bicycle bottom bracket assembly device according to claim 3, characterized in that: The upper wall of the inner cavity of the torque clamp (41) is rotatably connected to a bevel gear sleeve (42), and the bevel gear sleeve (42) is fixedly connected to the bowl sleeve (43). The front wall of the torque clamp (41) is rotatably connected to a driving bevel gear (44) meshing with the bevel gear sleeve (42), and the driving bevel gear (44) is driven by a motor 1 installed on the front wall of the torque clamp (41).

5. The bicycle bottom bracket assembly device according to claim 4, characterized in that: A torsion spring is fixedly connected between the rear end of the torsion clamp (41) and the assembly seat (4); a movable groove corresponding to the torsion clamp (41) is provided on the rear wall of the assembly cavity; the elastic force of the torsion spring is smaller than the elastic force of the spring telescopic rod (6); and the elastic force of the elastic trapezoidal bar (21) is smaller than the elastic force of the torsion spring.

6. The bicycle bottom bracket assembly device according to claim 5, characterized in that: The bowl sleeve (43) has a tubular protrusion in the middle that can extend into the central axis bowl, and the two side walls of the tubular protrusion have receiving grooves that are adapted to the clamping plate (45).

7. The bicycle bottom bracket assembly device according to claim 6, characterized in that: The inner wall of the tubular protrusion top is slidably connected to a slider (53), and a hinge plate (54) is movably connected between the slider (53) and the clamping plate (45). The bottom of the slider (53) is rotatably connected to a T-shaped pin (52) that movably passes through the bevel gear sleeve (42). The T-shaped pin (52) is slidably engaged with the inner wall of the torsion clamp (41). The top of the worm wheel (5) has a notch and the front and rear walls of the notch are both provided with arc grooves (51). The T-shaped pin (52) is movably engaged with the arc grooves (51). The driving shaft (3) is driven by a second motor installed on the right wall of the support (1).

8. The bicycle bottom bracket assembly device according to claim 7, characterized in that: The top front wall of the assembly seat (4) has a protrusion, and the left and right sides of the bottom of the assembly seat (4) both have shaft sleeve parts corresponding to the volute sleeve (55). The protrusion cooperates with the shaft sleeve part to limit the deflection range of the torsion clamp (41) to ninety degrees, and the torsion clamp (41) has a tendency to squeeze the protrusion.

9. The bicycle bottom bracket assembly device according to claim 8, characterized in that: The top center of the arc groove 1 (12) and the shaft of the torsion clamp (41) are at the same height.

10. The bicycle bottom bracket assembly device according to claim 9, characterized in that: Sealing rings (31) are fixedly sleeved on both sides of the drive shaft (3) near the outer end of the shaft sleeve portion, and a one-way air intake valve (32) and a one-way air exhaust valve (33) are respectively provided on the upper and lower sides of the sealing ring (31). The one-way air intake valve (32) is larger than the one-way air exhaust valve (33). The outer end of the shaft sleeve portion is fixedly connected to a sealing sleeve (7) that is slidably clamped on the drive shaft (3), and the sealing ring (31) is slidably sealedly connected to the inner wall of the sealing sleeve (7).

Images