Connecting piece and hand starter

Abstract

The utility model relates to the field of mechanical equipment, in particular to a connecting piece and a hand starter. The connecting piece comprises a strip-shaped base plate body (1), a rotation stopping part (2) is arranged at one end of the base plate body (1), a first through hole (11) is formed in the far end, opposite to the rotation stopping part (2), of the base plate body (1), a second through hole (12) is formed between the first through hole (11) and the rotation stopping part (2), and the rotation stopping part (2) is gradually narrowed in the direction away from the second through hole (12). Due to the strip-shaped design of the substrate body, the rotation stopping part and the extension part, the connecting piece is more compact in overall structure, smaller in occupied space, lower in cost and more reasonable in layout. And compared with the prior art, the integrated connecting piece design is lower in manufacturing difficulty, better in use stability and higher in market popularization value.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical equipment field, especially is a connecting piece and hand -operated starter. BACKGROUND

[0002] Hand -operated auxiliary starting equipment is widely used in the field such as agricultural equipment, and is an important means of auxiliary starting. In the prior art, the design of hand -operated auxiliary starting equipment mainly concentrates on the energy storage and release in the starting process through mechanical mechanism to reduce the force degree when starting and improve the starting efficiency.

[0003] In hand -operated auxiliary starting equipment, the connecting piece as the key transmission component directly influences the performance and reliability of starting device. The connecting piece design in the prior art has the following main problems:

[0004] 1) Complex structure: the design of connecting piece is often more complex, increases the difficulty and cost in the manufacturing process. Complex structure can cause difficulties in assembly and maintenance process, and affects the overall reliability of the equipment.

[0005] 2) Insufficient strength and durability: in actual use, the connecting piece needs to bear frequent pulling and rotating action, and is prone to wear and fatigue damage, shortens the service life and increases the maintenance frequency.

[0006] 3) Inconvenient operation: the design of the existing connecting piece causes uneven torque distribution when pulling the line, and the driver needs to exert greater force to complete the starting operation, which brings inconvenience to the user.

[0007] In addition, the design of the existing connecting piece lacks flexibility, and it is difficult to adapt to different types of agricultural equipment or different use environments, limiting its application range and adaptability.

[0008] In view of the above problems, researchers are committed to improving the design of connecting piece to improve its strength, durability and operation convenience. However, the existing improvement scheme still cannot completely solve the above problems, and the market urgently needs a connecting piece with simple structure, high strength and convenient operation to improve the overall performance of hand -operated auxiliary starting equipment.

[0009] Therefore, the skilled in the art is committed to developing a connecting piece and hand -operated starter. UTILITY MODEL CONTENT

[0010] In view of the above defects of the prior art, the technical problem to be solved by the utility model is to provide a connecting piece and hand -operated starter.

[0011] In order to achieve the above object, the utility model provides a connecting piece, including the base plate body of strip, the base plate body is responsible for providing the installation foundation. The base plate body one end is equipped with the rotation stop portion, the base plate body is equipped with the first through -hole to the far end of rotation stop portion, be equipped with the second through -hole between the first through -hole with rotation stop portion, the rotation stop portion gradually narrow away from the second through -hole direction.

[0012] Preferably, the rotation stop portion includes an upwardly projecting upper edge and an inwardly recessed lower edge, the upper edge is connected with a side edge away from one end of the base plate body, and the side edge is transitionally connected with the lower edge through an arc edge. The arc edge can effectively reduce the friction of the end of the rotation stop portion away from one end of the base plate body, reduce the stress concentration of the rotation stop portion, and improve the overall service life of the product

[0013] Preferably, the base plate body is provided with an extension away from one end of the rotation stop portion, the extension includes an upper edge and a lower edge, and the upper edge and the lower edge are arranged in parallel. The upper edge and the lower edge of the extension are arranged in parallel, so that it has a standby starting function.

[0014] Preferably, the extension and the base plate body are respectively provided with a first weight reduction groove and a second weight reduction groove. By respectively providing the first weight reduction groove and the second weight reduction groove, the self-weight and the production cost can be greatly reduced without affecting the strength of the base plate body and the extension

[0015] Preferably, the rotation stop portion and the second through -hole are provided with a let -go opening, the let -go opening is formed by the inward extension of the side edge of the base plate body, and the base plate body between the first through -hole and the rotation stop portion protrudes downward.

[0016] The utility model also provides a hand -operated starter, including any one connecting piece as above, still including the casing, be equipped with the support rod on the casing, the support rod with the base plate body rotation is connected in the second through -hole.

[0017] Preferably, the casing is provided with a driven shaft, the driven shaft is provided with a ratchet wheel, the ratchet wheel is matched with the rotation stop portion, and the rotation stop portion allows the ratchet wheel to rotate in one direction.

[0018] Preferably, the casing is provided with an elastic member, one end of the elastic member is connected with the casing, the other end is connected with the base plate body, and the elastic member is clamped into the teeth outside the ratchet wheel in the free extension state.

[0019] Preferably, the casing is also provided with a positioning member, the top of the positioning member is detachably connected with a release pull line, one end of the release pull line is connected with the first through -hole, and the other end is connected with the handle.

[0020] Preferably, the angle α between the release pull line and the extension is 80-110°.

[0021] The utility model discloses the beneficial effect is: the utility model discloses the substrate body, rotation -stopping portion and extension part strip design make the overall structure of connecting piece more compact, space occupation is smaller, cost is lower, and the layout is more reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overhead view of connecting piece in a specific embodiment of the utility model.

[0023] Figure 2 It is the structure schematic view of connecting piece in a specific embodiment of the utility model.

[0024] Figure 3 It is the assembly schematic view of connecting piece and ratchet wheel in a specific embodiment of the utility model.

[0025] Figure 4 It is the assembly schematic view of connecting piece and shell in a specific embodiment of the utility model.

[0026] 1, substrate body;11, first through -hole;12, second through -hole;13, second lightening groove;14, let -go opening;2, rotation -stopping portion;21, upper edge;22, lower edge;23, side edge;3, extension part;31, first lightening groove;3a, upper edge;3b, lower edge;4, shell;41, support rod;42, driven shaft;42a, ratchet wheel;43, elastic piece;44, positioning piece;5, release pull -line;5a, clamping notch. DETAILED DESCRIPTION

[0027] The utility model will be further described below in conjunction with the drawings and examples, need noting that, in the description of the utility model, the orientation or position relation that the terms "upper", "lower", "left", "right", "inner", "outer" etc. indicate is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, with a particular way of construction and operation, therefore can not be understood as the limitation of the utility model. The terms "first", "second", "third" etc. are only for the purpose of description, and can not be understood as indicating or implying relative importance.

[0028] As Figures 1-2 Shown, a kind of connecting piece, including the substrate body 1 of strip shape.The definition of strip shape in this embodiment is that substrate body 1 whole is located in the same horizontal plane, substrate body 1 provides installation foundation, is made of high-strength steel material.

[0029] The one end of the substrate body 1 is provided with a rotation stopping part 2, the far end of the substrate body 1 relative to the rotation stopping part 2 is provided with a first through hole 11, the first through hole 11 and the rotation stopping part 2 are provided with a second through hole 12, and the first through hole 11 and the second through hole 12 are arranged at intervals. Specifically, the rotation stopping part 2 is gradually narrowed along the direction away from the second through hole 12, and the whole is in the structure of left large and right small, and the subsequent clamping operation is carried out through the gradually narrowed end. The rotation stopping part 2 comprises an upwardly protruding upper edge 21 and an inwardly recessed lower edge 22, the upper edge 21 is connected with a side edge 23 away from the one end of the substrate body 1, and the side edge 23 and the lower edge 22 are connected through an arc-shaped edge. By arranging the arc-shaped edge, the end friction of the rotation stopping part 2 away from the one end of the substrate body 1 can be effectively reduced, the stress concentration of the rotation stopping part 2 is reduced, and the overall service life of the product is improved.

[0030] The one end of the substrate body 1 away from the rotation stopping part 2 is provided with an extension part 3, the extension part 3 is provided with a first weight-reducing groove 31, the extension part 3 comprises an upper edge 3a and a lower edge 3b, and the upper edge 3a and the lower edge 3b of the extension part 3 are arranged in parallel, so that the extension part 3 has a standby starting function. In use, an operator sleeves a crank (not shown in the figure) outside the extension part 3, and rotates the crank to drive the substrate body 1 to rotate synchronously.

[0031] The substrate body 1 is also provided with a second weight-reducing groove 13, and the second weight-reducing groove 13 can greatly reduce the self weight and production cost without affecting the strength of the substrate body 1.

[0032] In the embodiment, the rotation stopping part 2 and the second through hole 12 are provided with a let-out opening 14, and the let-out opening 14 is formed by extending inwardly from the side edge of the substrate body 1. In other embodiments, the let-out opening 14 can also be arranged at other positions of the substrate body 1. The utility model also provides a hand-operated starter, and the hand-operated starter comprises an elastic member 43. The main purpose of arranging the let-out opening 14 is to provide a mounting base for the elastic member 43.

[0033] In the embodiment, the substrate body 1 between the first through hole 11 and the rotation stopping part 2 protrudes downward, the substrate body 1, the rotation stopping part 2 and the extension part 3 are integrally formed and jointly constitute a "flying bird" structure. The design is very beautiful and can also reduce the production cost. In addition, the structure design that the substrate body 1 between the first through hole 11 and the rotation stopping part 2 protrudes downward can effectively prevent stress concentration of the substrate body 1, thereby prolonging the service life of the connecting piece.

[0034] As shown in the figure, Figures 3-4 The utility model also provides a hand-operated starter, which comprises the connecting piece as any one of the above, and further comprises a shell 4, the shell 4 is provided with a supporting rod 41, the supporting rod 41 is rotatably connected with the substrate body 1 in the second through hole 12 as a mounting base, and in the embodiment, the rotatable connection is a clearance fit.

[0035] In the embodiment, the shell 4 is provided with a driven shaft 42, the driven shaft 42 is provided with a ratchet wheel 42a, the ratchet wheel 42a is clamped and matched with the rotation-stopping part 2, and the rotation-stopping part 2 allows the ratchet wheel 42a to rotate in one direction. Specifically, the ratchet wheel 42a has a plurality of regularly arranged teeth, the rotation-stopping part 2 far away from one end of the base plate body 1 is matched with the teeth, and the rotation-stopping part 2 far away from one end of the base plate body 1 is located between the two adjacent teeth outside the ratchet wheel 42a. When the ratchet wheel 42a rotates, the tooth outer wall outside the ratchet wheel 42a can slide through the end of the rotation-stopping part 2. Since the end of the rotation-stopping part 2 is designed in an arc shape, the ratchet wheel 42a is more stable and smooth during rotation.

[0036] The shell 4 is provided with an elastic member 43. In the embodiment, the elastic member 43 is a torsion spring, the torsion spring is sleeved outside the supporting rod 41, one end is connected with the shell 4, and the other end is connected with the base plate body 1. In other embodiments, a cylindrical coil spring or a straight spring or other same type products can also be used. In the free extension state, the rotation-stopping part 2 is clamped into the tooth outside the ratchet wheel 42a.

[0037] The shell 4 is also provided with a positioning member 44, the top of the positioning member 44 is detachably connected with the release pull wire 5, one end of the release pull wire 5 is connected with the first through hole 11, and the other end is connected with a handle (not shown in the figure). In the embodiment, the detachable connection is clamping. Specifically, the top of the positioning member 44 is provided with a clamping notch 5a, the clamping notch 5a is used to accommodate the release pull wire 5, the release pull wire 5 is sleeved with a first locking nut (not shown in the figure) and a second locking nut (not shown in the figure) at intervals, and the release pull wire 5 is fixed by clamping and positioning the positioning member 44 through the first locking nut and the second locking nut.

[0038] The angle α between the release pull wire 5 and the extension part 3 is 80-110°. In the embodiment, the angle α is 90° in the initial state, and experiments prove that this angle setting is the most labor-saving when pulling the tightening pull wire.

[0039] In use, the operator rotates the driven shaft 42 using the crank, and the ratchet wheel 42a rotates synchronously with the driven shaft 42. When the ratchet wheel 42a rotates, the teeth on the outer side of the ratchet wheel 42a slide past the end of the stop portion 2 away from the base plate body 1. When the side wall of the teeth on the outer side of the ratchet wheel 42a slides past the end of the stop portion 2 away from the base plate body 1, the side wall of the teeth of the ratchet wheel 42a pushes the stop portion 2 to swing away from the ratchet wheel 42a about the support rod 41 as the pivot, at this time, the elastic member 43 is in a stretched state, and the ratchet wheel 42a is not limited by the stop portion 2 and can rotate in one direction. When the energy storage is completed, the operator stops rotating the driven shaft 42, and the end of the stop portion 2 away from the base plate body 1 is pulled by the elastic member 43 to re-enter the teeth on the outer side of the ratchet wheel 42a, and the two are in a locked state to limit the rotation of the ratchet wheel 42a. At this time, the operator can rotate the base plate body 1 about the support rod 41 as the pivot by pulling the release pull wire 5, the end of the stop portion 2 away from the base plate body 1 is pulled out of the teeth on the outer side of the ratchet wheel 42a, and the two are unlocked, and the energy storage of the driven shaft 42 is released.

[0040] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes to the present application without creative work according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the existing technology according to the concept of the present application should be within the protection scope defined by the claims.

Claims

1. A tab, characterized by: The application relates to a substrate body (1) in strip shape, which is provided with a rotation-stopping part (2) at one end, a first through hole (11) at the distal end of the rotation-stopping part (2), a second through hole (12) between the rotation-stopping part (2) and the first through hole (11), and the rotation-stopping part (2) gradually narrows away from the second through hole (12).

2. The tab of claim 1, wherein: The rotation-stopping part (2) comprises an upwardly-protruding upper edge (21) and an inwardly-recessed lower edge (22), the upper edge (21) is connected with a side edge (23) away from one end of the substrate body (1), and the side edge (23) and the lower edge (22) are connected through an arc-shaped edge.

3. The tab of claim 1, wherein: The substrate body (1) is provided with an extension part (3) at one end away from the rotation-stopping part (2), the extension part (3) comprises an upper edge (3a) and a lower edge (3b), and the upper edge (3a) and the lower edge (3b) are arranged in parallel.

4. The tab of claim 3, wherein: First and second weight-reducing grooves (31) and (13) are formed on the extension part (3) and the substrate body (1) respectively.

5. The tab according to any one of claims 1-4, wherein: A clearance opening (14) is arranged between the rotation-stopping part (2) and the second through hole (12), and the clearance opening (14) is formed by extending the side edge of the substrate body (1) inwardly; The substrate body (1) between the first through hole (11) and the rotation-stopping part (2) protrudes downward.

6. A hand-cranked starter comprising the connecting plate according to any one of claims 1 to 5, characterized in that: A housing (4) is further arranged, the housing (4) is provided with a supporting rod (41), and the supporting rod (41) and the substrate body (1) are rotationally connected in the second through hole (12).

7. The hand-actuated initiator of claim 6, wherein: The housing (4) is provided with a driven shaft (42), the driven shaft (42) is provided with a ratchet wheel (42a), the ratchet wheel (42a) is in clamping cooperation with the rotation-stopping part (2), and the rotation-stopping part (2) allows the ratchet wheel (42a) to rotate in one direction.

8. The hand-actuated initiator of claim 7, wherein: The housing (4) is provided with an elastic member (43), one end of the elastic member (43) is connected with the housing (4), the other end is connected with the substrate body (1), and the rotation-stopping part (2) is clamped into the tooth outside the ratchet wheel (42a) in the free extension state of the elastic member (43).

9. The hand-actuated initiator of claim 6, wherein: The housing (4) is further provided with a positioning member (44), the top of the positioning member (44) is detachably connected with a release pull wire (5), one end of the release pull wire (5) is connected with the first through hole (11), and the other end is connected with a handle.

10. The hand-actuated initiator of claim 9, wherein: The included angle alpha between the release pull wire (5) and the extension part (3) is 80-110 degrees.

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