Shell connecting mechanism, power module and power-assisted bicycle

Abstract

The utility model relates to the technical field of shells, and discloses a shell connecting mechanism, a power module and a booster bicycle, the shell connecting mechanism comprises a first shell, a second shell and a first stud. The periphery of the first shell is provided with a connecting hole for a bolt to pass through; the second shell and the first shell jointly form an accommodating space; the first stud is integrally formed on the periphery of the second shell, a first connecting column extends from the joint of the first stud and the second shell, and the diameter of the horizontal cross section of the first connecting column is smaller than that of the horizontal cross section of the first stud, so that a first clearance position is formed between the first stud and the second shell; bolts penetrate through the connecting holes and the first studs at the same time so that the first shell can be connected to the second shell. According to the shell connecting mechanism, the problem that the surface of the outer wall of the shell is concave or convex and is uneven due to thermal expansion and cold contraction of the shell or deformation of the stud is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of shells, and particularly relates to a shell connection mechanism, a power supply module and an assisted bicycle. Background Art

[0002] An assisted bicycle is a new type of two-wheeled vehicle, which belongs to a kind of bicycle. It uses a battery as an auxiliary power source, is equipped with a motor, and has a power assist system, and can realize the integration of human-powered riding and motor-assisted driving.

[0003] In the related art, an assisted bicycle is provided with an electrical box. The electrical box includes a shell with a receiving cavity and a battery assembly received in the receiving cavity. The shell includes an upper shell and a lower shell. The upper shell and the lower shell are usually connected together by studs arranged on the periphery of the shell. However, due to the influence of the characteristics of the plastic material that expands and contracts during injection molding of the shell, the connection between the shell and the stud is prone to deformation, resulting in depressions or unevenness on the outer wall surface of the shell; and when assembling the upper shell and the lower shell together, it is necessary to rotate the bolt into the screw hole. To ensure the tightness between the two, the bolt will expand the screw hole, which will naturally cause the cross-section of the stud to increase, that is, the stud will deform. The increase in the cross-section of the stud will cause the stud to press against the shell, resulting in protrusions on the outer wall surface of the shell, and further causing the outer wall surface of the shell to be uneven.

[0004] Therefore, it is urgent to solve the problem that the outer wall surface of the shell is sunken, protruded or uneven due to the thermal expansion and contraction of the shell or the deformation of the stud. Summary of the Utility Model

[0005] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides a shell connection mechanism, a power supply module and an assisted bicycle, which solve the problem that the outer wall surface of the shell is sunken, protruded or uneven due to the thermal expansion and contraction of the shell or the deformation of the stud.

[0006] The technical effects to be achieved by the utility model are realized through the following aspects:

[0007] In the first aspect, the utility model provides a shell connection mechanism, including:

[0008] A first shell, with connection holes for bolts to pass through provided on its periphery;

[0009] A second shell, jointly forming an accommodation space with the first shell; and

[0010] A first stud is integrally formed on the periphery of the second shell, a first connecting column extends from the connection between the first stud and the second shell, and the horizontal cross-sectional diameter of the first connecting column is smaller than the horizontal cross-sectional diameter of the first stud, so that a first avoidance position is formed between the first stud and the second shell; a bolt is simultaneously passed through the connecting hole and the first stud, so that the first shell is connected to the second shell.

[0011] In some implementations, a groove is formed at a connection between the second shell and the first connecting column, and a diameter of the groove is larger than a horizontal cross-sectional diameter of the bolt.

[0012] In this implementation, the groove not only ensures that the first avoidance position is sufficient to accommodate the deformed stud, but also makes the overall structure more compact, thereby improving the compactness of the structure.

[0013] In some implementations, it also includes a fixing component connected to the periphery of the groove and the first stud respectively.

[0014] In this implementation, the fixing assembly fixes the first stud on the inner wall of the second shell, thereby preventing the first stud from falling off the second shell, resulting in the problem that the first shell and the second shell cannot be connected, and improving the connection reliability of the overall structure.

[0015] In some implementations, the fixing assembly includes a first fixing member, a second fixing member, and a third fixing member, wherein the first fixing member and the second fixing member are respectively connected to the periphery of the groove, and a second clearance position is formed between the first fixing member and the first stud respectively;

[0016] The third fixing member is respectively connected to the first fixing member and the end of the second fixing member away from the periphery of the groove, and is connected to the first stud. The first fixing member, the second fixing member and the third fixing member together form a frame to fix the first stud.

[0017] In some implementations, a mounting groove for mounting the first stud is formed at a connection between the third fixing member and the first stud.

[0018] In this implementation, the side of the first stud facing away from the connecting column is installed in the installation groove, so that the connection between the first stud and the third fixing member is more stable, and the overall structure is more compact, and the first stud is better fixed in the groove.

[0019] In some implementations, the fixing assembly further includes a support plate, and the support plate is respectively connected to a bottom wall of the groove and an end of the first stud facing away from the first shell.

[0020] In some implementations, the fixing assembly is integrally formed with the second shell.

[0021] In a second aspect, the present utility model provides a power supply module, which includes a battery assembly, a second stud, and a housing connection mechanism. The battery assembly is installed in the accommodation space and extends a connection portion; the second stud is integrally formed on the periphery of the second housing, and a second connection column extends at the connection between the second stud and the second housing. The diameter of the horizontal cross-section of the second connection column is smaller than the diameter of the horizontal cross-section of the second stud, so as to form a clearance area between the second stud and the second housing; a bolt passes through the connection portion and the second stud at the same time, so as to connect the battery assembly to the second housing.

[0022] In some implementation manners, the second stud is arranged adjacent to the first stud and is connected to the first stud through a connection block.

[0023] In this implementation manner, it is convenient to connect the battery assembly and the first housing to the second housing respectively, and since the first stud and the second stud are connected together through a connection block, the overall structural compactness is also improved.

[0024] In a third aspect, the present utility model provides an assisted bicycle, which includes a vehicle body and a power supply module, and the power supply module is installed on the vehicle body.

[0025] In summary, the present utility model has at least the following advantages:

[0026] For the housing connection mechanism provided by the present utility model, since a first clearance position is formed between the second housing and the first stud, that is, the second housing does not directly contact the first stud, it is avoided that when the second housing and the first stud are integrally formed by an injection molding process, due to the characteristics of the plastic material that it will expand and contract with heat, the connection between the second housing and the first stud is prone to deformation after injection molding cooling, resulting in the problem that the outer wall surface of the second housing is sunken or uneven. At the same time, it also avoids the problem that when the bolt rotates into the stud hole, the cross-section of the stud increases and deforms, and then a protrusion is formed on the outer wall surface of the second housing. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the housing connection mechanism of Embodiment 1;

[0028] Figure 2 It is Figure 1 an enlarged view of the housing connection mechanism shown at A;

[0029] Figure 3 It is Figure 1 an enlarged view of the housing connection mechanism shown at B;

[0030] Figure 4 It is Figure 1Another perspective structural schematic diagram of the shown housing connection mechanism;

[0031] Figure 5 For Figure 4 An enlarged view of the shown housing connection mechanism at C;

[0032] Figure 6 Structural schematic diagram of the power module of Embodiment 2;

[0033] Figure 7 For Figure 6 An enlarged view of the shown power module at D.

[0034] Markings in the figure:

[0035] 1. Housing connection mechanism;

[0036] 10. First housing; 11. Connection hole;

[0037] 20. Second housing; 21. Accommodating space; 22. Groove;

[0038] 30. First stud; 31. First connecting column; 32. First clearance position;

[0039] 40. Fixing component; 41. First fixing piece; 42. Second fixing piece; 43. Third fixing piece; 44. Second clearance position; 45. Installation groove; 46. Support plate;

[0040] 2. Power module;

[0041] 50. Battery component; 51. Connection part;

[0042] 60. Second stud; 61. Second connecting column; 62. Clearance area; 63. Connection block. Detailed implementation manners

[0043] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments are some but not all of the embodiments of the present utility model.

[0044] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0045] Embodiment 1:

[0046] Please refer to the appendix Figures 1 - 5 For the housing connection mechanism 1 of the present utility model, it includes a first housing 10, a second housing 20 and a first stud 30.

[0047] Among them, please combine Figure 1 and Figure 2 , Figure 1 which shows the structural relationship among the first housing 10, the second housing 20 and the first stud 30 in the embodiment of the present utility model. Figure 2 which shows the structural relationship among the first stud 30, the second housing 20 and the first connecting column 31 in the embodiment of the present utility model. Specifically, a connection hole 11 for a bolt to pass through is formed on the periphery of the first housing 10; the second housing 20 and the first housing 10 jointly form a receiving space 21; the first stud 30 is integrally formed on the periphery of the second housing 20, and a first connecting column 31 extends at the connection between the first stud 30 and the second housing 20. The horizontal cross-sectional diameter of the first connecting column 31 is smaller than the horizontal cross-sectional diameter of the first stud 30, so that a first clearance position 32 is formed between the first stud 30 and the second housing 20; the bolt is simultaneously inserted through the connection hole 11 and the first stud 30, so that the first housing 10 is connected to the second housing 20.

[0048] In this embodiment, when the second housing 20 and the first stud 30 are integrally formed by an injection molding process, since the first stud 30 and the second housing 20 are connected by the first connecting column 31, and the horizontal cross-sectional diameter of the first connecting column 31 is smaller than the horizontal cross-sectional diameter of the first stud 30, a first clearance position 32 is formed between the first stud 30 and the second housing 20. In this way, there is no direct contact between the inner wall of the second housing 20 and the first stud 30, avoiding the influence of the characteristics of thermal expansion and contraction of the plastic material on both the second housing 20 and the first stud 30 formed by injection molding, and avoiding the deformation at the connection between the second housing 20 and the first stud 30 caused by the shrinkage of the plastic after injection molding, and further avoiding the problem of depression on the outer wall surface of the second housing 20; at the same time, it also avoids the problem that when the first housing 10 and the second housing 20 are connected, the bolt rotates and locks into the stud hole, causing the stud to expand, that is, the cross-section of the stud increases and deforms, so that the stud presses against the inner wall of the second housing 20, resulting in the problem of protrusion on the outer wall surface of the second housing 20.

[0049] The above-mentioned shell connection mechanism 1, since a first avoidance position 32 is formed between the second shell 20 and the first stud 30, that is, the second shell 20 does not come into direct contact with the first stud 30, it is avoided that when the second shell 20 and the first stud 30 are integrally formed by the injection molding process, the connection between the second shell 20 and the first stud 30 is easily deformed due to the property of the plastic material that expands with heat and contracts with cold. As a result, the outer wall surface of the second shell 20 becomes concave or uneven. At the same time, it also avoids the problem that when the bolt is rotated into the stud hole, the cross-section of the stud increases, deforms, and then causes the outer wall surface of the second shell 20 to bulge.

[0050] In some preferred embodiments, see Figure 3 , Figure 3 The diagram illustrates the structural relationship between the second shell 20, the first connecting column 31 and the groove 22 in an embodiment of the utility model. Specifically, a groove 22 is provided at the connection between the second shell 20 and the first connecting column 31, and the diameter of the groove 22 is greater than the horizontal cross-sectional diameter of the bolt. The groove 22 not only ensures that the first escape position 32 is sufficient to accommodate the deformed stud, but also makes the overall structure more compact and improves the compactness of the structure. It can be understood that since the second shell 20 is provided with the groove 22, the first escape position 32 is naturally enlarged, further avoiding the problem of bulges on the outer wall surface of the second shell 20 caused by the deformation of the stud. Of course, it is not limited to providing a groove 22 on the second shell 20 to enlarge the first escape position 32, and the first escape position 32 can also be enlarged by increasing the length of the connecting column.

[0051] In some preferred embodiments, a fixing assembly 40 is further included, which is respectively connected to the periphery of the groove 22 and the first stud 30. The fixing assembly 40 fixes the first stud 30 to the inner wall of the second shell 20, thereby preventing the first stud 30 from falling off from the second shell 20, resulting in the problem that the first shell 10 and the second shell 20 cannot be connected, thereby improving the connection reliability of the overall structure.

[0052] In some preferred embodiments, the fixing assembly 40 includes a first fixing member 41, a second fixing member 42 and a third fixing member 43. The first fixing member 41 and the second fixing member 42 are respectively connected to the periphery of the groove 22, and a second avoidance position 44 is formed between each of the first fixing member 41 and the second fixing member 42 and the first stud 30; the third fixing member 43 is respectively connected to the first fixing member 41 and the end of the second fixing member 42 away from the periphery of the groove 22, and is connected to the first stud 30. The first fixing member 41, the second fixing member and the third fixing member 43 together form a frame-type body to fix the first stud 30.

[0053] In this embodiment, since second clearance spaces 44 are respectively formed between the first fixing member 41, the second fixing member 42 and the first stud 30, and the second clearance spaces 44 communicate with the first clearance space 32, the first stud 30 can be deformed toward three sides of its own circumference, further avoiding the problem that the outer wall surface of the second housing 20 bulges due to the deformation of the stud. At the same time, since the first stud 30 is fixed in the groove 22, the overall structure is made more compact, improving the reliability of the overall structure.

[0054] In some preferred embodiments, an installation groove 45 for installing the first stud 30 is formed at the connection between the third fixing member 43 and the first stud 30. One side of the first stud 30 facing away from the connecting column is installed in the installation groove 45, making the connection between the first stud 30 and the third fixing member 43 more stable, and the overall structure more compact, and better fixing the first stud 30 in the groove 22.

[0055] In some preferred embodiments, please refer to Figure 4 and Figure 5 , Figure 4 and Figure 5 which illustrate the structural relationship between the support plate 46 and the first stud 30 in the embodiment of the present invention. Specifically, the fixing assembly 40 further includes a support plate 46, and the support plate 46 is respectively connected to the bottom wall of the groove 22 and one end of the first stud 30 facing away from the first housing 10. It plays a role in supporting the first stud 30, preventing the first stud 30 from falling off from the second housing 20, and at the same time plays a role in limiting the bolt. When the bolt rotates into the first stud 30 and abuts against the support plate 46, the rotation can be stopped to avoid damage to the first stud 30, the first housing 10 and the second housing 20 caused by the bolt penetrating too deeply.

[0056] In some more preferred embodiments, the fixing assembly 40 is integrally formed with the second housing 20. Making the connection between the fixing assembly 40 and the second housing 20 more stable. Of course, the fixing assembly 40 can also be fixed to the second housing 20 by welding, embedding or other means.

[0057] Embodiment 2:

[0058] On the basis of the above embodiment, this embodiment provides a power module 2. Please refer to the attached Figures 6 - 7 .

[0059] Among them, please refer to Figure 6 and Figure 7 , Figure 6 which illustrate the specific structure of the power module 2 in the embodiment of the present invention. Figure 7It shows the structural relationship between the second stud 60 and the second housing 20 in the embodiment of the present utility model. Specifically, a power module 2 includes a battery assembly 50, a second stud 60, and a housing connection mechanism 1. The battery assembly 50 is installed in the accommodation space 21 and extends a connection portion 51; the second stud 60 is integrally formed on the periphery of the second housing 20, and a second connection column 61 extends at the connection between the second stud 60 and the second housing 20. The horizontal cross-sectional diameter of the second connection column 61 is smaller than the horizontal cross-sectional diameter of the second stud 60, so that a clearance area 62 is formed between the second stud 60 and the second housing 20; a bolt is simultaneously passed through the connection portion 51 and the second stud 60, so that the battery assembly 50 is connected to the second housing 20.

[0060] In this embodiment, a clearance area 62 is formed between the second stud 60 and the second housing 20, avoiding the influence of the characteristics of thermal expansion and contraction of the plastic material on both the second housing 20 and the second stud 60 formed by injection molding. After injection molding, the plastic cools and shrinks, resulting in deformation at the connection between the second housing 20 and the second stud 60, and further causing the problem of depression on the outer wall surface of the second housing 20; at the same time, it also avoids the problem that when installing the battery assembly 50 and the second housing 20, the bolt enters the second stud 60, resulting in an increase in the horizontal cross-sectional diameter of the second stud 60 and further causing the problem of protrusion on the outer wall surface of the second housing 20.

[0061] In some preferred embodiments, please refer to Figure 7 , Figure 7 It shows the structural relationship between the first stud 30 and the second stud 60 in the embodiment of the present utility model. Specifically, the second stud 60 is adjacent to the first stud 30 and is connected to the first stud 30 through a connecting block 63. It is convenient to connect the battery assembly 50 and the first housing 10 to the second housing 20 respectively, and since the first stud 30 and the second stud 60 are connected together through the connecting block 63, the overall structural compactness is also improved.

[0062] Embodiment 3:

[0063] Based on the above embodiment, this embodiment provides an assisted bicycle.

[0064] Among them, an assisted bicycle includes a vehicle body and a power module 2, and the power module 2 is installed on the vehicle body.

[0065] In this embodiment, the power module 2 is installed on the assisted bicycle to assist the assisted bicycle in traveling, making the riding more labor-saving.

[0066] For the assistive bicycle of the present utility model, since a first clearance position 32 is formed between the second housing 20 and the first stud 30, that is, the second housing 20 does not come into direct contact with the first stud 30, it is avoided that when the second housing 20 and the first stud 30 are integrally formed by an injection molding process, affected by the characteristic of thermal expansion and contraction of the plastic material, deformation is likely to occur at the connection between the second housing 20 and the first stud 30 after injection molding and cooling, thus causing problems such as dents or unevenness on the outer wall surface of the second housing 20. At the same time, it is also avoided that when the bolt rotates into the stud hole, the cross-section of the stud increases and deformation occurs, thereby causing protrusions on the outer wall surface of the second housing 20.

[0067] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" and the like shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0068] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0069] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0070] In the present utility model, unless otherwise clearly defined and limited, the first feature being above or below the second feature may include direct contact between the first and second features, or may include contact between the first and second features not directly but through additional features therebetween. Moreover, the first feature being above, over, and on top of the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under, and beneath the second feature includes the first feature being directly below and diagonally below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0071] Although the description of the present utility model is made in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications, and variations based on the above content. Therefore, all such substitutions, improvements, and variations are included within the spirit and scope of the appended claims.

Claims

1. A shell connection mechanism, characterized in that: include: The first housing (10) has a connection hole (11) formed on its periphery for the bolts to pass through; A second shell (20) and the first shell (10) together form a containing space (21); and A first stud (30) is integrally formed at the periphery of the second shell (20); a first connecting column (31) extends from the connection between the first stud (30) and the second shell (20); the horizontal cross-sectional diameter of the first connecting column (31) is smaller than the horizontal cross-sectional diameter of the first stud (30), so that a first clearance position (32) is formed between the first stud (30) and the second shell (20); a bolt is simultaneously inserted into the connecting hole (11) and the first stud (30), so that the first shell (10) is connected to the second shell (20).

2. The housing connection mechanism according to claim 1, characterized in that: A groove (22) is provided at the connection between the second housing (20) and the first connecting column (31), and the diameter of the groove (22) is greater than the horizontal cross-sectional diameter of the bolt.

3. The housing connection mechanism according to claim 2, characterized in that: It also includes a fixing assembly (40) respectively connected to the periphery of the groove (22) and the first stud (30).

4. The housing connection mechanism according to claim 3, characterized in that: The fixing assembly (40) comprises a first fixing member (41), a second fixing member (42) and a third fixing member (43); the first fixing member (41) and the second fixing member (42) are respectively connected to the periphery of the groove (22), and a second clearance position (44) is formed between the first fixing member (41) and the second fixing member (42) and the first stud (30); The third fixing member (43) is respectively connected to the first fixing member (41) and the second fixing member (42) at one end away from the periphery of the groove (22), and is connected to the first stud (30); the first fixing member (41), the second fixing member and the third fixing member (43) together form a frame-shaped body to fix the first stud (30).

5. The housing connection mechanism according to claim 4, characterized in that: A mounting groove (45) for mounting the first stud (30) is provided at the connection between the third fixing member (43) and the first stud (30).

6. The housing connection mechanism according to claim 3, characterized in that: The fixing assembly (40) further comprises a support plate (46), wherein the support plate (46) is respectively connected to the bottom wall of the groove (22) and an end of the first stud (30) facing away from the first shell (10).

7. The housing connection mechanism according to claim 3, characterized in that: The fixing assembly (40) is integrally formed with the second shell (20).

8. A power module, characterized in that: The invention comprises a battery assembly (50), a second stud (60), and a shell connecting mechanism (1) according to any one of claims 1 to 7, wherein the battery assembly (50) is installed in the accommodating space (21) and has a connecting portion (51) extending therefrom; the second stud (60) is integrally formed at the periphery of the second shell (20), a second connecting column (61) extends from the connection between the second stud (60) and the second shell (20), the horizontal cross-sectional diameter of the second connecting column (61) is smaller than the horizontal cross-sectional diameter of the second stud (60), so that an air avoidance zone (62) is formed between the second stud (60) and the second shell (20); bolts are simultaneously passed through the connecting portion (51) and the second stud (60), so that the battery assembly (50) is connected to the second shell (20).

9. The power module according to claim 8, characterized in that: The second stud (60) is arranged adjacent to the first stud (30), and is connected to the first stud (30) via a connecting block (63).

10. An assisted bicycle, comprising a vehicle body and a power module (2) according to any one of claims 8 to 9, wherein the power module (2) is mounted on the vehicle body.

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