Bicycle front fork and assembly welding method and assembly welding mold thereof

Abstract

The invention belongs to the technical field of bicycle assemblies, and discloses a bicycle front fork and an assembling and welding method and an assembling and welding die thereof.The bicycle front fork comprises a fork bone, a vertical rod, a first hook claw and a second hook claw, the fork bone comprises a fork shoulder, a first fork leg and a second fork leg, and a first distance is formed between a shoulder cover and the top face of the fork shoulder; a second distance is formed between the first hook claw and the first fork leg, and a third distance is formed between the second hook claw and the second fork leg, so that a first filling welding groove can be formed in an area between the shoulder cover and the top surface, and a second filling welding groove can be formed in an area between the first hook claw and the first fork leg; a third filling welding groove can be formed in the area between the second hook claw and the second fork leg, and therefore when the complete bicycle front fork is obtained through welding, welding materials can be filled in the first filling welding groove, the second filling welding groove and the third filling welding groove and cannot protrude outwards, the manufactured bicycle front fork is continuous in shape, the attractiveness is remarkably improved, and the manufacturing cost is reduced. And the consumption experience of the user can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bicycle components, and in particular to a bicycle front fork, a welding method thereof, and a welding die. Background Art

[0002] A bicycle, also known as a pedal bike or a cycle, can not only be used as an environmentally friendly means of transportation for commuting and traveling, but also as a fitness equipment for cycling exercise and outings, becoming an important means of transportation and fitness tool in people's daily lives.

[0003] A bicycle includes a frame, pedals, and a front fork, etc. Among them, the front fork is connected to the vertical tube of the frame and is used to install the front wheel. In the prior art, the front fork is generally formed by welding structures such as fork blades, shoulder caps, uprights, and hooks. Among them, the shoulder cap is cylindrical and is arranged on the upright. The fork blades include a left fork leg and a right fork leg. The left fork leg and the right fork leg need to be assembled and welded with the cylindrical shoulder cap to be connected together. Specifically, the connecting parts of the left fork leg and the right fork leg are made into arc-shaped butt joints through processes such as cutting and arc welding. The left fork leg and the right fork leg are spliced with the arc-shaped shoulder cap through the arc-shaped butt joints, and then welded integrally at the splicing place to form a complete structure. In addition, the hooks need to be assembled and welded with the fork legs. Specifically, a left hook and a right hook are respectively assembled and welded on the left fork leg and the right fork leg. The left hook and the right hook are respectively inserted and spliced on the left fork leg and the right fork leg, and then welded integrally at the splicing place to form a complete structure.

[0004] However, in the prior art, there will be obvious convex welds at the welding parts of the manufactured bicycle front fork, resulting in discontinuous shaping of the front fork and insufficient aesthetics, thereby affecting the user's consumption experience. Summary of the Invention

[0005] The purpose of the present invention is to provide a bicycle front fork, a welding method thereof, and a welding die to solve the problem that there are obvious convex welds at the welding parts of the bicycle front fork, resulting in discontinuous shaping of the front fork and insufficient aesthetics, thereby affecting the user's consumption experience.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] On the one hand, the present invention provides a bicycle front fork, including:

[0008] Fork blades, including a fork shoulder, a first fork leg, and a second fork leg. The fork shoulder is provided with a jack, and the first fork leg and the second fork leg are hollow.

[0009] The vertical rod has a first insertion portion provided at one end along its axial direction. A shoulder cover is provided on the vertical rod. The first insertion portion is inserted into the insertion hole from the top surface of the fork shoulder, and the shoulder cover and the top surface face each other. Along the axial direction of the vertical rod, there is a first distance between the shoulder cover and the top surface;

[0010] The first hook claw and the second hook claw. A second insertion portion is formed on the first hook claw, and a third insertion portion is formed on the second hook claw. The second insertion portion is inserted into the first fork leg from the end of the first fork leg away from the fork shoulder. Along the insertion direction of the second insertion portion, there is a second distance between the first hook claw and the first fork leg. The third insertion portion is inserted into the second fork leg from the end of the second fork leg away from the fork shoulder. Along the insertion direction of the third insertion portion, there is a third distance between the second hook claw and the second fork leg.

[0011] Preferably, a first limiting groove is formed in the hole wall of the insertion hole, and a limiting block is provided on the vertical rod. The limiting block is located on the side of the shoulder cover facing the first insertion portion;

[0012] Along the axial direction of the vertical rod, the limiting block extends into the insertion hole and abuts against the bottom of the first limiting groove.

[0013] Preferably, a second limiting groove is provided on the outer side of the limiting block along the radial direction of the vertical rod;

[0014] Along the axial direction of the vertical rod, the bottom of the second limiting groove abuts against the top surface.

[0015] Preferably, the cross-sectional area of the first fork leg gradually decreases from the side close to the fork shoulder to the side away from the fork shoulder. The cross-sectional area of the second insertion portion remains unchanged from the side close to the first hook claw to the side away from the first hook claw, or the cross-sectional area of the second insertion portion gradually decreases from the side close to the first hook claw to the side away from the first hook claw;

[0016] The cross-sectional area of the second fork leg gradually decreases from the side close to the fork shoulder to the side away from the fork shoulder. The cross-sectional area of the third insertion portion remains unchanged from the side close to the second hook claw to the side away from the second hook claw, or the cross-sectional area of the third insertion portion gradually decreases from the side close to the second hook claw to the side away from the second hook claw.

[0017] On the other hand, the present invention also provides a method for assembling and welding a bicycle front fork as described above, including:

[0018] Insert the first plugging part into the jack, and insert the second plugging part and the third plugging part into the first fork leg and the second fork leg respectively. A first filling welding groove is formed between the shoulder cover and the top surface, a second filling welding groove is formed between the first claw and the first fork leg, and a third filling welding groove is formed between the second claw and the second fork leg;

[0019] Using the first filling welding groove as the first welding point, weld the vertical rod and the fork bone, and fill the welding material into the first filling welding groove;

[0020] Using the second filling welding groove as the second welding point, weld the first claw and the first fork leg, and fill the welding material into the second filling welding groove;

[0021] Using the third filling welding groove as the third welding point, weld the second claw and the second fork leg, and fill the welding material into the third filling welding groove.

[0022] On the other hand, the present invention also provides a bicycle front fork assembly welding mold for assembling and welding the bicycle front fork as described above, including:

[0023] A first supporting block is provided with a first profiling groove and a second profiling groove arranged at intervals in a first direction. The first fork leg and the second fork leg can be respectively placed in the first profiling groove and the second profiling groove;

[0024] A second supporting block is arranged at an interval from the first supporting block in a second direction. The second direction is perpendicular to the first direction, and the distance between the first supporting block and the second supporting block is equal to a first preset value. The second supporting block is provided with a third profiling groove, and the vertical rod can be placed in the third profiling groove and is in a posture with its axis parallel to the second direction;

[0025] A third supporting block is arranged at an interval from the first supporting block in the second direction, and the distance between the first supporting block and the third supporting block is equal to a second preset value. The third supporting block is provided with a fourth profiling groove, and the barrel shaft installed between the first claw and the second claw can be placed in the fourth profiling groove.

[0026] Preferably, the first supporting block includes a first block body and a second block body arranged at intervals in the second direction. The first block body is provided with a first groove part and a second groove part arranged at intervals in the first direction, and the second block body is provided with a third groove part and a fourth groove part arranged at intervals in the first direction. The first groove part and the third groove part are arranged on the same side and form the first profiling groove, and the second groove part and the fourth groove part are arranged on the same side and form the second profiling groove.

[0027] Preferably, the positions of the first supporting block, the second supporting block and the third supporting block in the second direction are all adjustable.

[0028] Preferably, the bicycle front fork assembly welding die further comprises:

[0029] A first pressing mechanism, including a first driving member and a first pressing block. The first driving member is configured to drive the first pressing block to move towards or away from the second supporting block. A fifth profiling groove is provided on the first pressing block, and the groove wall of the fifth profiling groove can jointly cover the vertical rod with the groove wall of the third profiling groove;

[0030] A second pressing mechanism, including a second driving member and a second pressing block. The second driving member is configured to drive the second pressing block to move towards or away from the third supporting block. A sixth profiling groove is provided on the second pressing block, and the groove wall of the sixth profiling groove can jointly cover the barrel shaft with the groove wall of the fourth profiling groove.

[0031] Preferably, the area between the shoulder cover and the top surface is a first welding area, the areas between the first hook claw and the first fork leg and between the second hook claw and the second fork leg are second welding areas. The bicycle front fork assembly welding die further comprises a base and a third driving member. The first supporting block, the second supporting block and the third supporting block are all mounted on the base, and the third driving member is configured to drive the base to move so that the first welding area and the second welding area are sequentially located at the welding station.

[0032] Advantages of the present invention:

[0033] The present invention is designed through the structure of the bicycle front fork. Specifically, by making there be a first distance between the shoulder cover and the top surface of the fork shoulder, a second distance between the first hook claw and the first fork leg, and a third distance between the second hook claw and the second fork leg, so that the area between the shoulder cover and the top surface can form a first filling welding groove, the area between the first hook claw and the first fork leg can form a second filling welding groove, and the area between the second hook claw and the second fork leg can form a third filling welding groove. Thus, when welding to obtain a complete bicycle front fork, the welding material can be filled in the first filling welding groove, the second filling welding groove and the third filling welding groove without protruding outward, so that the formed bicycle front fork has a continuous shape and the aesthetic degree is significantly improved, thereby improving the consumption experience of users.

[0034] The present invention assembles a bicycle front fork to be welded through a welding die for the bicycle front fork assembly. Specifically, the present invention ensures that the distance between the first supporting block and the second supporting block is equal to a first preset value, so that when the vertical rod is placed on the second supporting block, the depth of insertion of the vertical rod into the jack hole satisfies the condition that the distance between the top surfaces of the shoulder cover and the fork shoulder is equal to a first distance, and the shoulder cover and / or the fork bone will not be damaged. The present invention also ensures that the distance between the third supporting block and the first supporting block is equal to a second preset value, so that when the barrel shaft is placed on the third supporting block, the depth of insertion of the first hook into the first fork leg satisfies the condition that the distance between the first hook and the first fork leg is equal to a second distance, and the first hook and / or the first fork leg will not be damaged. The depth of insertion of the second hook into the second fork leg satisfies the condition that the distance between the second hook and the second fork leg is equal to a third distance, and the second hook and / or the second fork leg will not be damaged. Furthermore, a first filling weld groove, a second filling weld groove, and a third filling weld groove can be formed on the assembled bicycle front fork. After welding to obtain a complete bicycle front fork, the welding material is filled in the first filling weld groove, the second filling weld groove, and the third filling weld groove, and will not protrude, so that the obtained bicycle front fork has a continuous shape and the aesthetic degree is significantly improved, thereby improving the consumption experience of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural view of a bicycle front fork in an embodiment of the present invention;

[0036] Figure 2 is along Figure 1 the sectional view taken along line A-A in

[0037] Figure 3 is Figure 1 the partial enlarged view at B in

[0038] Figure 4 is Figure 1 the partial enlarged view at C in

[0039] Figure 5 is Figure 1 the partial enlarged view at D in

[0040] Figure 6 is Figure 2 the partial enlarged view at E in

[0041] Figure 7 is one of the schematic structural views of a fork bone in an embodiment of the present invention;

[0042] Figure 8 is Figure 7 the partial enlarged view at F in

[0043] Figure 9 is another schematic structural view of a fork bone in an embodiment of the present invention;

[0044] Figure 10It is a schematic structural diagram of the vertical rod in the embodiment of the present invention;

[0045] Figure 11 is Figure 10 a partial enlarged view at position G in;

[0046] Figure 12 It is a schematic structural diagram of the first claw, the second claw, the second insertion part, the third insertion part and the cylinder shaft in the embodiment of the present invention;

[0047] Figure 13 It is a schematic structural diagram of the bicycle front fork assembly welding die in the embodiment of the present invention;

[0048] Figure 14 It is a schematic structural diagram of the bicycle front fork assembly welding die with a bicycle front fork placed thereon in the embodiment of the present invention;

[0049] Figure 15 It is a schematic structural diagram of the first pressing mechanism in the embodiment of the present invention;

[0050] Figure 16 It is a schematic structural diagram of the second pressing mechanism in the embodiment of the present invention.

[0051] In the figure:

[0052] 110, fork bone; 111, fork shoulder; 1111, jack; 11111, first limiting groove; 1112, top surface; 11121, first opening; 112, first fork leg; 1121, second opening; 113, second fork leg; 1131, third opening; 120, vertical rod; 121, first insertion part; 122, shoulder cover; 123, limiting block; 1231, second limiting groove; 131, first claw; 132, second claw; 141, second insertion part; 142, third insertion part; 150, cylinder shaft; 161, first welding filling groove; 162, second welding filling groove; 163, third welding filling groove;

[0053] 210, first supporting block; 211, first profiling groove; 2111, first groove part; 2112, third groove part; 212, second profiling groove; 2121, second groove part; 2122, fourth groove part; 213, first block body; 214, second block body; 220, second supporting block; 221, third profiling groove; 230, third supporting block; 231, fourth profiling groove; 240, first pressing mechanism; 241, first driving part; 242, first pressing block; 2421, fifth profiling groove; 250, second pressing mechanism; 251, second driving part; 252, second pressing block; 2521, sixth profiling groove; 260, base; 261, sliding groove. Detailed implementation manners

[0054] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0055] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of 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 invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0057] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", and "left" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0058] Please refer to Figures 1 to 12 , this embodiment provides a bicycle front fork, which includes a fork crown 110 and a steerer tube 120. Among them, the fork crown 110 includes a fork shoulder 111, a first fork leg 112, and a second fork leg 113. The fork shoulder 111, the first fork leg 112, and the second fork leg 113 are integrally formed. The fork shoulder 111 connects the first fork leg 112 and the second fork leg 113 together. The fork shoulder 111 is provided with a socket 1111, and the first fork leg 112 and the second fork leg 113 are hollow.

[0059] One end of the vertical rod 120 along its axis is provided with a first insertion portion 121. A shoulder cover 122 is arranged on the vertical rod 120. The first insertion portion 121 is inserted into the insertion hole 1111 from the top surface 1112 of the fork shoulder 111, and the shoulder cover 122 and the top surface 1112 are facing each other. Specifically, the insertion hole 1111 extends along its axis to the top surface 1112 of the fork shoulder 111, and a first opening 11121 is formed on the top surface 1112 of the fork shoulder 111. The first insertion portion 121 is inserted into the insertion hole 1111 from the first opening 11121, so that the vertical rod 120 and the fork bone 110 can be assembled together. In addition, along the axis of the vertical rod 120, there is a first distance between the shoulder cover 122 and the top surface 1112, and the area between the shoulder cover 122 and the top surface 1112 forms a first welding groove 161. When manufacturing the bicycle front fork mentioned above, the first welding groove 161 can be used as the first welding point. During the welding process, the welding material is filled in the first welding groove 161. After welding around the entire circumference of the first welding groove 161, the vertical rod 120 and the fork bone 110 are welded together. Since the welding material is filled in the first welding groove 161 during the welding process, after welding, the weld seam is formed in the first welding groove 161 and fills the first welding groove 161, so that the shape between the vertical rod 120 and the fork bone 110 is continuous and no convex weld seam appears.

[0060] In addition to the fork bone 110 and the vertical rod 120, the bicycle front fork further includes a first hook 131 and a second hook 132. A second insertion portion 141 is formed on the first hook 131, and a third insertion portion 142 is formed on the second hook 132. Based on the content mentioned above, the first fork leg 112 and the second fork leg 113 are hollow, so that one end of the first fork leg 112 away from the fork shoulder 111 forms a second opening 1121, and one end of the second fork leg 113 away from the fork shoulder 111 forms a third opening 1131. The second insertion portion 141 is inserted into the first fork leg 112 from one end of the first fork leg 112 away from the fork shoulder 111, that is, the second insertion portion 141 is inserted into the first fork leg 112 from the second opening 1121. In addition, the third insertion portion 142 is inserted into the second fork leg 113 from one end of the second fork leg 113 away from the fork shoulder 111, that is, the third insertion portion 142 is inserted into the second fork leg 113 from the third opening 1131.

[0061] Moreover, along the insertion direction of the second insertion portion 141, there is a second spacing between the first hook 131 and the first fork leg 112. Along the insertion direction of the third insertion portion 142, there is a third spacing between the second hook 132 and the second fork leg 113. Among them, the area between the first hook 131 and the first fork leg 112 forms a second filler welding groove 162. When manufacturing the bicycle front fork mentioned above, the second filler welding groove 162 can be used as the second welding point. During the welding process, the welding material is filled into the second filler welding groove 162. After welding around the entire circumference of the second filler welding groove 162, the fork bone 110 and the first hook 131 are welded together. Correspondingly, the area between the second hook 132 and the second fork leg 113 forms a third filler welding groove 163. When manufacturing the bicycle front fork mentioned above, the third filler welding groove 163 can be used as the third welding point. During the welding process, the welding material is filled into the third filler welding groove 163. After welding around the entire circumference of the third filler welding groove 163, the fork bone 110 and the second hook 132 are welded together.

[0062] Since the welding material is filled into the second filler welding groove 162 and the third filler welding groove 163 during the welding process, after welding, the weld seams are formed in and fill the second filler welding groove 162 and the third filler welding groove 163, so that the shapes between the fork bone 110 and the first hook 131 and between the fork bone 110 and the second hook 132 are continuous, and no convex weld seams appear.

[0063] Based on the above, in this embodiment, the structure of the bicycle front fork is designed. Specifically, in this embodiment, by making there be a first spacing between the shoulder cover 122 and the top surface 1112 of the fork shoulder 111, a second spacing between the first hook 131 and the first fork leg 112, and a third spacing between the second hook 132 and the second fork leg 113, the area between the shoulder cover 122 and the top surface 1112 can form a first filler welding groove 161, the area between the first hook 131 and the first fork leg 112 can form a second filler welding groove 162, and the area between the second hook 132 and the second fork leg 113 can form a third filler welding groove 163. Thus, when welding to obtain a complete bicycle front fork, the welding material can be filled into the first filler welding groove 161, the second filler welding groove 162, and the third filler welding groove 163 without protruding, so that the obtained bicycle front fork has a continuous shape and the aesthetic degree is significantly improved, thereby improving the user's consumption experience.

[0064] Therefore, this embodiment also provides a group welding method for the bicycle front fork as described above. The group welding method for the bicycle front fork includes:

[0065] S1. Insert the first plugging part 121 into the jack 1111, and insert the second plugging part 141 and the third plugging part 142 into the first fork leg 112 and the second fork leg 113 respectively. A first welding groove 161 is formed between the shoulder cover 122 and the top surface 1112, a second welding groove 162 is formed between the first claw 131 and the first fork leg 112, and a third welding groove 163 is formed between the second claw 132 and the second fork leg 113.

[0066] S2. Using the first welding groove 161 as the first welding point, weld the vertical rod 120 and the fork bone 110, and fill the welding material into the first welding groove 161; using the second welding groove 162 as the second welding point, weld the first claw 131 and the first fork leg 112, and fill the welding material into the second welding groove 162; using the third welding groove 163 as the third welding point, weld the second claw 132 and the second fork leg 113, and fill the welding material into the third welding groove 163.

[0067] Specifically, the fork bone 110, the vertical rod 120, the first claw 131 and the second claw 132 are all made by an integral molding method. After the fork bone 110, the vertical rod 120, the first claw 131 and the second claw 132 are made, insert the first plugging part 121 into the jack 1111, and insert the second plugging part 141 and the third plugging part 142 into the first fork leg 112 and the second fork leg 113 respectively, so as to assemble the front fork of the bicycle. Then, weld at the first welding groove 161 formed between the shoulder cover 122 and the top surface 1112, the second welding groove 162 formed between the first claw 131 and the first fork leg 112, and the third welding groove 163 formed between the second claw 132 and the second fork leg 113, so as to obtain a complete front fork of the bicycle. Since the welding material can be filled into the first welding groove 161, the second welding groove 162 and the third welding groove 163 during the welding process without protruding, the front fork of the bicycle obtained has a continuous shape, and the aesthetic degree is significantly improved, thereby improving the consumption experience of users.

[0068] It can be understood that during welding, processes such as laser welding, arc welding or ultrasonic welding can be used, and this embodiment does not make specific limitations on this.

[0069] Further, to ensure that there is a first spacing between the shoulder cover 122 and the top surface 1112, and that the vertical rod 120 does not protrude from the bottom of the fork shoulder 111 outside the fork bone 110, in this embodiment, a first limiting groove 11111 is formed in the pore wall of the socket 1111, and a limiting block 123 is provided on the vertical rod 120. The limiting block 123 is located on the side of the shoulder cover 122 facing the first insertion portion 121. It can be understood that the first limiting groove 11111 is formed from the top surface 1112 of the fork shoulder 111 towards the bottom of the fork shoulder 111. Thus, along the axial direction of the vertical rod 120, the limiting block 123 can extend into the socket 1111 and abut against the bottom of the first limiting groove 11111. The first limiting groove 11111 can limit the insertion depth of the vertical rod 120 into the fork shoulder 111. On the one hand, this ensures that the vertical rod 120 does not protrude from the bottom of the fork shoulder 111 outside the fork bone 110. On the other hand, it also ensures that there can be a first spacing between the shoulder cover 122 and the top surface 1112.

[0070] Furthermore, along the radial direction of the vertical rod 120, a second limiting groove 1231 is provided on the outer side of the limiting block 123. When the limiting block 123 extends into the socket 1111, along the axial direction of the vertical rod 120, the bottom of the second limiting groove 1231 abuts against the top surface 1112, thereby ensuring that the spacing between the shoulder cover 122 and the top surface 1112 is precisely equal to the preset value, and further ensuring that the vertical rod 120 does not protrude from the bottom of the fork shoulder 111 outside the fork bone 110.

[0071] In addition, to ensure that there is a second spacing between the first hook claw 131 and the first fork leg 112, in this embodiment, the cross-sectional area of the first fork leg 112 gradually decreases from the side close to the fork shoulder 111 towards the side away from the fork shoulder 111, and the cross-sectional area of the second insertion portion 141 remains unchanged from the side close to the first hook claw 131 towards the side away from the first hook claw 131. Thus, the second insertion portion 141 is blocked and cannot continue to be inserted after being inserted into the first fork leg 112 for a certain part. That is, this embodiment can ensure that there is a second spacing between the first hook claw 131 and the first fork leg 112 by restricting the insertion depth of the second insertion portion 141 into the first fork leg 112.

[0072] Of course, in other alternative embodiments, the cross-sectional area of the second insertion portion 141 can also gradually decrease from the side close to the first hook claw 131 towards the side away from the first hook claw 131, so as to also be able to restrict the insertion depth of the second insertion portion 141 into the first fork leg 112. This embodiment does not make specific limitations on this.

[0073] Accordingly, to ensure that there is a third spacing between the second hook claw 132 and the second fork leg 113, in this embodiment, the cross-sectional area of the second fork leg 113 gradually decreases from the side close to the fork shoulder 111 to the side far from the fork shoulder 111, and the cross-sectional area of the third insertion portion 142 remains unchanged from the side close to the second hook claw 132 to the side far from the second hook claw 132. As a result, the third insertion portion 142 is blocked and cannot continue to be inserted after being inserted into the second fork leg 113 for a part. That is, this embodiment can ensure that there is a third spacing between the second hook claw 132 and the second fork leg 113 by restricting the depth of insertion of the third insertion portion 142 into the second fork leg 113.

[0074] Of course, in other alternative embodiments, the cross-sectional area of the third insertion portion 142 can also gradually decrease from the side close to the second hook claw 132 to the side far from the second hook claw 132, so as to also be able to restrict the depth of insertion of the third insertion portion 142 into the second fork leg 113. This embodiment does not make specific restrictions on this.

[0075] In addition, it is worth noting that a barrel shaft 150 is installed between the first hook claw 131 and the second hook claw 132, and the barrel shaft 150 is used to install the front wheel.

[0076] As described above, as Figures 13 to 16 shown, and in combination with Figures 1 to 12 , this embodiment also provides a bicycle front fork assembly welding mold, which is used to assemble the bicycle front fork to be welded. The bicycle front fork assembly welding mold includes a first support block 210, a second support block 220, and a third support block 230. Among them, the first support block 210 is used to carry and position the fork bone 110, the second support block 220 is used to carry and position the vertical rod 120, and the third support block 230 is used to carry and position the barrel shaft 150 installed between the first hook claw 131 and the second hook claw 132, so as to position the first hook claw 131 and the second hook claw 132.

[0077] Specifically, the first support block 210 is provided with a first profiling groove 211 and a second profiling groove 212 arranged at intervals in the first direction. The first profiling groove 211 is adapted to the first fork leg 112, and the second profiling groove 212 is adapted to the second fork leg 113. The first fork leg 112 and the second fork leg 113 can be respectively placed in the first profiling groove 211 and the second profiling groove 212 in a posture arranged at intervals in the first direction, so as to position the fork bone 110.

[0078] The second supporting block 220 is arranged at intervals with the first supporting block 210 along a second direction, the second direction is perpendicular to the first direction, and the distance between the first supporting block 210 and the second supporting block 220 is equal to a first preset value. The second supporting block 220 is provided with a third profiling groove 221, and the third profiling groove 221 is adapted to the vertical rod 120. The vertical rod 120 can be placed in the third profiling groove 221 and is in a posture with its axis parallel to the second direction. When the vertical rod 120 is placed on the second supporting block 220, the vertical rod 120 is inserted into the jack 1111, so as to position the vertical rod 120. In this embodiment, by controlling the distance between the first supporting block 210 and the second supporting block 220, it is ensured that when the fork bone 110 and the vertical rod 120 are respectively placed on the first supporting block 210 and the second supporting block 220, the depth of the vertical rod 120 inserted into the jack 1111 satisfies that the distance between the shoulder cover 122 and the top surface 1112 of the fork shoulder 111 is equal to a first distance, and the shoulder cover 122 and / or the fork bone 110 will not be damaged.

[0079] In addition, the third supporting block 230 is arranged at intervals with the first supporting block 210 along the second direction, and the distance between the first supporting block 210 and the third supporting block 230 is equal to a second preset value. It can be understood that the third supporting block 230 and the second supporting block 220 are respectively located on both sides of the first supporting block 210 along the second direction. The third supporting block 230 is provided with a fourth profiling groove 231, and the fourth profiling groove 231 is adapted to the barrel shaft 150 installed between the first hook 131 and the second hook 132. The barrel shaft 150 installed between the first hook 131 and the second hook 132 can be placed in the fourth profiling groove 231. When the barrel shaft 150 is placed on the third supporting block 230, the second insertion part 141 and the third insertion part 142 are respectively inserted into the first fork leg 112 and the second fork leg 113, so as to position the first hook 131 and the second hook 132. In this embodiment, by controlling the distance between the third supporting block 230 and the first supporting block 210, it is ensured that when the barrel shaft 150 is respectively placed on the third supporting block 230, the depth of the first hook 131 inserted into the first fork leg 112 satisfies that the distance between the first hook 131 and the first fork leg 112 is equal to a second distance, and the first hook 131 and / or the first fork leg 112 will not be damaged. The depth of the second hook 132 inserted into the second fork leg 113 satisfies that the distance between the second hook 132 and the second fork leg 113 is equal to a third distance, and the second hook 132 and / or the second fork leg 113 will not be damaged.

[0080] Specifically, based on the structural design of the bicycle front fork, the third profiling groove 221 penetrates through the second supporting block 220 along the second direction, the fourth profiling groove 231 penetrates through the third supporting block 230 along the first direction, the vertical rod 120 is placed on the second supporting block 220 with its axis parallel to the second direction, and the barrel shaft 150 is placed on the third supporting block 230 with its axis parallel to the first direction. When the fork bone 110, the vertical rod 120, and the barrel shaft 150 are respectively placed on the first supporting block 210, the second supporting block 220, and the third supporting block 230, the fork bone 110, the vertical rod 120, and the barrel shaft 150 are assembled together. In this embodiment, the first direction is the X-axis direction, and the second direction is the Y-axis direction. When the fork bone 110 is placed on the first supporting block 210, the fork bone 110 is positioned in the X-axis direction, the Y-axis direction, and the Z-axis direction perpendicular to both the X-axis direction and the Y-axis direction. When the vertical rod 120 is placed on the second supporting block 220, the vertical rod 120 is positioned in the X-axis direction, the Y-axis direction, and the Z-axis direction. When the barrel shaft 150 is placed on the third supporting block 230, the first claw 131 and the second claw 132 are positioned in the X-axis direction, the Y-axis direction, and the Z-axis direction.

[0081] Moreover, in this embodiment, by controlling the distance between the first supporting block 210 and the second supporting block 220 to be equal to the first preset value, it is ensured that when the vertical rod 120 is placed on the second supporting block 220, the depth of insertion of the vertical rod 120 into the jack 1111 satisfies that the distance between the shoulder cover 122 and the top surface 1112 of the fork shoulder 111 is equal to the first distance, and the shoulder cover 122 and / or the fork bone 110 will not be damaged. In this embodiment, by further controlling the distance between the third supporting block 230 and the first supporting block 210 to be equal to the second preset value, it is ensured that when the barrel shaft 150 is placed on the third supporting block 230, the depth of insertion of the first claw 131 into the first fork leg 112 satisfies that the distance between the first claw 131 and the first fork leg 112 is equal to the second distance, and the first claw 131 and / or the first fork leg 112 will not be damaged. The depth of insertion of the second claw 132 into the second fork leg 113 satisfies that the distance between the second claw 132 and the second fork leg 113 is equal to the third distance, and the second claw 132 and / or the second fork leg 113 will not be damaged. Furthermore, a first welding filling groove 161, a second welding filling groove 162, and a third welding filling groove 163 can be formed on the assembled bicycle front fork. After welding to obtain a complete bicycle front fork, the welding material is filled in the first welding filling groove 161, the second welding filling groove 162, and the third welding filling groove 163 without protruding outward, so that the formed bicycle front fork has a continuous shape and the aesthetic degree is significantly improved, thereby improving the user's consumption experience.

[0082] It should be noted that the first supporting block 210 includes a first block body 213 and a second block body 214 arranged at intervals in the second direction. The first block body 213 is provided with a first groove portion 2111 and a second groove portion 2121 arranged at intervals in the first direction. The second block body 214 is provided with a third groove portion 2112 and a fourth groove portion 2122 arranged at intervals in the first direction. The first groove portion 2111 and the third groove portion 2112 are arranged on the same side and form a first profiling groove 211. The second groove portion 2121 and the fourth groove portion 2122 are arranged on the same side and form a second profiling groove 212, thereby further ensuring that the fork 110 is accurately positioned in the X-axis direction and the Y-axis direction.

[0083] In addition, the positions of the first supporting block 210, the second supporting block 220, and the third supporting block 230 in the second direction are adjustable. That is, in this embodiment, the distances between the first supporting block 210 and the second supporting block 220 and between the first supporting block 210 and the third supporting block 230 are adjusted, so as to ensure that the distance between the first supporting block 210 and the second supporting block 220 is accurately equal to a first preset value, and the distance between the first supporting block 210 and the third supporting block 230 is accurately equal to a second preset value. Thus, when the fork 110, the vertical rod 120, and the cylinder shaft 150 are respectively placed on the first supporting block 210, the second supporting block 220, and the third supporting block 230, the first filling and welding groove 161, the second filling and welding groove 162, and the third filling and welding groove 163 that meet the requirements can be formed on the assembled bicycle front fork.

[0084] It can be understood that in this embodiment, only the positions of the first supporting block 210, the second supporting block 220, and the third supporting block 230 in the second direction are adjusted before welding a batch of bicycle front forks, so as to ensure that each time the fork 110, the vertical rod 120, and the cylinder shaft 150 are placed, the distance between the shoulder cover 122 and the top surface 1112 of the fork shoulder 111 is equal to a first distance, the distance between the first hook claw 131 and the first fork leg 112 is equal to a second distance, and the distance between the second hook claw 132 and the second fork leg 113 is equal to a third distance. Furthermore, the quality of the subsequent bicycle front forks made in the same batch can be ensured to be unified and meet the requirements.

[0085] Based on the above, the bicycle front fork assembly welding die further includes a base 260. The first support block 210, the second support block 220, and the third support block 230 are all installed on the base 260. Exemplarily, in this embodiment, a chute 261 extending in the second direction is provided on the base 260. The first support block 210, the second support block 220, and the third support block 230 are detachably installed in the chute 261. When it is necessary to adjust the positions of the first support block 210, the second support block 220, and the third support block 230, the connection of the first support block 210, the second support block 220, and the third support block 230 can be released first, and then the positions of the first support block 210, the second support block 220, and the third support block 230 relative to the chute 261 can be adjusted. After the adjustment is completed, the first support block 210, the second support block 220, and the third support block 230 can be locked and installed in the chute 261 again.

[0086] Furthermore, the bicycle front fork assembly welding die further includes a first pressing mechanism 240 and a second pressing mechanism 250. Among them, the first pressing mechanism 240 is configured to press and lock the vertical rod 120 to the second support block 220, so as to fully position the vertical rod 120 in the Z-axis direction. The second pressing mechanism 250 is configured to press and lock the cylinder shaft 150 to the third support block 230, so as to fully position the cylinder shaft 150 in the Z-axis direction.

[0087] Specifically, the first pressing mechanism 240 includes a first driving member 241 and a first pressing block 242. The first driving member 241 is configured to drive the first pressing block 242 to move toward or away from the second support block 220. A fifth profiling groove 2421 is provided on the first pressing block 242. After the first pressing block 242 moves toward the second support block 220, the groove walls of the fifth profiling groove 2421 and the third profiling groove 221 can jointly wrap the vertical rod 120, so as to press and lock the vertical rod 120 to the second support block 220.

[0088] The second pressing mechanism 250 includes a second driving member 251 and a second pressing block 252. The second driving member 251 is configured to drive the second pressing block 252 to move toward or away from the third support block 230. A sixth profiling groove 2521 is provided on the second pressing block 252. The groove walls of the sixth profiling groove 2521 and the fourth profiling groove 231 can jointly wrap the cylinder shaft 150, so as to press and lock the cylinder shaft 150 to the third support block 230.

[0089] Exemplarily, in this embodiment, both the first driving member 241 and the second driving member 251 are elbow clamps. Of course, in other alternative embodiments, the first driving member 241 and the second driving member 251 can also be linear driving structures such as cylinders or electric cylinders. This embodiment does not make specific limitations in this regard.

[0090] Based on the content described above, after the wishbone 110, the vertical rod 120, and the barrel shaft 150 are respectively placed on the first support block 210, the second support block 220, and the third support block 230, the area between the top surface 1112 of the shoulder cover 122 and the wishbone shoulder 111 is the first welding area, and the areas between the first hook claw 131 and the first fork leg 112 and between the second hook claw 132 and the second fork leg 113 are the second welding areas. During welding, it is necessary to weld in the first welding area and the second welding area in sequence. However, due to the relatively long overall length of the bicycle front fork, to facilitate welding in the first welding area and the second welding area in sequence, the group welding die for the bicycle front fork in this embodiment further includes a third driving member (not shown in the figure). The third driving member is configured to drive the base 260 to move, so that the first welding area and the second welding area are sequentially located at the welding station. That is, in this embodiment, the positions of the first welding area and the second welding area can be exchanged through the third driving member, so as to weld in the first welding area and the second welding area in sequence. Since it is not necessary to operate the welding torch to move between the first welding area and the second welding area in this embodiment, this embodiment can save the time consumed in the welding process, thereby improving the production efficiency.

[0091] It can be understood that the third driving member can be a driving structure such as a rotary cylinder or a motor, and this embodiment does not make specific limitations on this.

[0092] In addition, since the specific structure of the third driving member and the transmission connection structure between the third driving member and the base 260 are both prior arts, this embodiment will not elaborate on this.

[0093] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the embodiments of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A bicycle front fork, characterized in that: include: A fork bone (110) comprises a fork shoulder (111), a first fork leg (112) and a second fork leg (113), wherein the fork shoulder (111) is provided with an insertion hole (1111), and the first fork leg (112) and the second fork leg (113) are hollow; A vertical rod (120) is provided with a first plug-in portion (121) along one end of the vertical rod (120) in an axial direction. A shoulder cover (122) is provided on the vertical rod (120). The first plug-in portion (121) is inserted into the insertion hole (1111) through the top surface (1112) of the fork shoulder (111), and the shoulder cover (122) and the top surface (1112) are directly opposite to each other. Along the axial direction of the vertical rod (120), there is a first distance between the shoulder cover (122) and the top surface (1112); A first hook (131) and a second hook (132), wherein the first hook (131) is formed with a second plug-in portion (141), and the second hook (132) is formed with a third plug-in portion (142), wherein the second plug-in portion (141) is inserted into the first fork leg (112) from one end of the first fork leg (112) away from the fork shoulder (111), and along the insertion direction of the second plug-in portion (141), there is a second distance between the first hook (131) and the first fork leg (112), and the third plug-in portion (142) is inserted into the second fork leg (113) from one end of the second fork leg (113) away from the fork shoulder (111), and along the insertion direction of the third plug-in portion (142), there is a third distance between the second hook (132) and the second fork leg (113).

2. The bicycle front fork according to claim 1, characterized in that: A first limiting groove (11111) is provided on the hole wall of the insertion hole (1111), and a limiting block (123) is provided on the vertical rod (120), wherein the limiting block (123) is located on a side of the shoulder cover (122) facing the first plug-in portion (121); Along the axial direction of the vertical rod (120), the limiting block (123) extends into the insertion hole (1111) and abuts against the bottom of the first limiting groove (11111).

3. The bicycle front fork according to claim 2, characterized in that: A second limiting groove (1231) is provided on the outer side of the limiting block (123) along the radial direction of the vertical rod (120); Along the axial direction of the vertical rod (120), the bottom of the second limiting groove (1231) abuts against the top surface (1112).

4. The bicycle front fork according to claim 1, characterized in that: The cross-sectional area of ​​the first fork leg (112) gradually decreases from a side close to the fork shoulder (111) to a side away from the fork shoulder (111), and the cross-sectional area of ​​the second plug-in portion (141) remains unchanged from a side close to the first hook (131) to a side away from the first hook (131), or the cross-sectional area of ​​the second plug-in portion (141) gradually decreases from a side close to the first hook (131) to a side away from the first hook (131); The cross-sectional area of ​​the second fork leg (113) gradually decreases from a side close to the fork shoulder (111) to a side away from the fork shoulder (111), and the cross-sectional area of ​​the third plug-in portion (142) remains unchanged from a side close to the second hook (132) to a side away from the second hook (132), or the cross-sectional area of ​​the third plug-in portion (142) gradually decreases from a side close to the second hook (132) to a side away from the second hook (132).

5. The assembly welding method of a bicycle front fork according to any one of claims 1 to 4, characterized in that: include: Insert the first plug-in portion (121) into the plug hole (1111), and insert the second plug-in portion (141) and the third plug-in portion (142) into the first fork leg (112) and the second fork leg (113) respectively, so that a first welding groove (161) is formed between the shoulder cover (122) and the top surface (1112), a second welding groove (162) is formed between the first hook (131) and the first fork leg (112), and a third welding groove (163) is formed between the second hook (132) and the second fork leg (113); Using the first welding groove (161) as a first welding point, welding the vertical rod (120) and the fork bone (110), and filling the first welding groove (161) with welding material; Using the second welding groove (162) as a second welding point, welding the first hook (131) and the first fork leg (112), and filling the second welding groove (162) with welding material; The second hook (132) and the second fork leg (113) are welded with the third welding groove (163) as a third welding point, and welding material is filled into the third welding groove (163).

6. A bicycle front fork assembly welding mold, used for assembling a bicycle front fork to be welded as claimed in any one of claims 1 to 4, characterized in that: include: The first support block (210) is provided with a first profiling groove (211) and a second profiling groove (212) arranged at intervals along a first direction, and the first fork leg (112) and the second fork leg (113) can be placed in the first profiling groove (211) and the second profiling groove (212) respectively; A second supporting block (220) is arranged with a spacing from the first supporting block (210) along a second direction, the second direction is perpendicular to the first direction, and the spacing between the first supporting block (210) and the second supporting block (220) is equal to a first preset value, the second supporting block (220) is provided with a third profiling groove (221), the vertical rod (120) can be placed in the third profiling groove (221) and is in a posture with its axial direction parallel to the second direction; The third supporting block (230) is arranged with a spacing from the first supporting block (210) along the second direction, and the spacing between the first supporting block (210) and the third supporting block (230) is equal to a second preset value. The third supporting block (230) is provided with a fourth profiling groove (231), and the cylindrical shaft (150) installed between the first hook (131) and the second hook (132) can be placed in the fourth profiling groove (231).

7. The bicycle front fork assembly welding mold according to claim 6, characterized in that: The first supporting block (210) comprises a first block (213) and a second block (214) arranged at intervals along the second direction; the first block (213) is provided with a first groove portion (2111) and a second groove portion (2121) arranged at intervals along the first direction; the second block (214) is provided with a third groove portion (2112) and a fourth groove portion (2122) arranged at intervals along the first direction; the first groove portion (2111) and the third groove portion (2112) are arranged on the same side and constitute the first profiling groove (211); the second groove portion (2121) and the fourth groove portion (2122) are arranged on the same side and constitute the second profiling groove (212).

8. The bicycle front fork assembly welding mold according to claim 6, characterized in that: The positions of the first supporting block (210), the second supporting block (220) and the third supporting block (230) in the second direction are all adjustable.

9. The bicycle front fork assembly welding mold according to claim 6, characterized in that: The bicycle front fork assembly welding mold also includes: A first pressing mechanism (240) comprises a first driving member (241) and a first pressing block (242), wherein the first driving member (241) is configured to drive the first pressing block (242) to move toward or away from the second supporting block (220), and the first pressing block (242) is provided with a fifth profiling groove (2421), and the groove wall of the fifth profiling groove (2421) can cover the vertical rod (120) together with the groove wall of the third profiling groove (221); The second clamping mechanism (250) comprises a second driving member (251) and a second pressing block (252), wherein the second driving member (251) is configured to drive the second pressing block (252) to move toward or away from the third supporting block (230), and the second pressing block (252) is provided with a sixth profiling groove (2521), and the groove wall of the sixth profiling groove (2521) can cover the cylindrical shaft (150) together with the groove wall of the fourth profiling groove (231).

10. The bicycle front fork assembly welding mold according to claim 6, characterized in that: The area between the shoulder cover (122) and the top surface (1112) is a first welding area, the area between the first hook (131) and the first fork leg (112) and the area between the second hook (132) and the second fork leg (113) are second welding areas, and the bicycle front fork assembly welding mold further comprises a base (260) and a third driving member, the first support block (210), the second support block (220) and the third support block (230) are all mounted on the base (260), and the third driving member is configured to drive the base (260) to move so that the first welding area and the second welding area are sequentially located at welding stations.

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