A snap-on crank handle housing combined structure

Abstract

A snap - type crank handle housing combination structure, including a crank handle housing and a crank handle. The crank handle housing includes a crank handle outer shell and a crank handle inner shell. The crank handle inner shell is composed of a left inner shell, a right inner shell and a lower inner shell. The left inner shell and the right inner shell are coaxially sleeved outside the middle rod. After the left inner shell and the right inner shell are coaxially arranged, a crank handle mounting hole is formed at the upper end. The crank handle outer shell is sleeved outside the left inner shell and the right inner shell through a guiding fit. The lower inner shell is inserted into the crank handle outer shell from the lower end and coaxially sleeved on the lower ends of the left inner shell and the right inner shell through a clamping connection. One end of the crank handle is installed in the crank handle mounting hole and connected to the crank handle shaft, and the other end is connected to the crank handle head. The outer surface of the crank handle head is made of natural rubber. The structure of the present invention is simple and reasonable, convenient for disassembly and assembly, and beautiful in appearance. It can not only meet the replacement of various types of outer shells, but also improve the comfort of customers during use, and improve the product quality and customer experience.

Description

Technical Field

[0001] The present invention relates to the technical field of sunshades, and particularly to a snap-type crank handle housing combination structure. Background Art

[0002] As an outdoor leisure appliance, a sunshade is widely used in leisure places such as squares, beaches, parks and courtyards, providing a comfortable cooling space for people. The existing sunshade generally consists of a pole, a skeleton and a canopy. The skeleton is connected to the top of the pole, and the pole mainly supports the skeleton. The canopy is connected to the skeleton and is stretched open as the skeleton is opened, thus opening the sunshade. Sunshades require different shading areas in different usage scenarios. Large outdoor sunshades are usually large and tall, and are generally opened and closed by means of hand-pushing, pulling ropes, crank handles, etc.

[0003] There are various styles of the existing crank handle combinations for sunshades, but most of them are two plastic housings connected by screws. This not only exposes the screw mounting holes, but also cannot replace the housings of other styles in the same state. In addition, most of the existing crank handles of sunshades are made of metal or ordinary plastic, greatly affecting the customer experience.

[0004] Therefore, there is an urgent need to design a new crank handle housing combination, which is not only beautiful in appearance, but also can replace various types of housings, and at the same time, the feel of the crank handle is comfortable, improving the product quality and customer experience. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a snap-type crank handle housing combination structure with reasonable structure and convenient disassembly and assembly in view of the above technical status. The structure is not only beautiful in appearance, can replace various types of housings, but also can improve the comfort of customers during use.

[0006] The technical solution adopted by the present invention to solve the above technical problem is: a snap-type crank handle housing combination structure, including a crank handle housing and a crank handle. The crank handle includes a crank handle shaft and a crank handle head. The characteristics are as follows: the crank handle housing includes a crank handle outer housing and a crank handle inner housing. The crank handle inner housing is sleeved on the middle rod, and the crank handle outer housing is detachably sleeved outside the crank handle inner housing. The crank handle inner housing is composed of a left inner housing, a right inner housing and a lower inner housing. The left inner housing and the right inner housing are sleeved outside the middle rod in a butted manner. After the left inner housing and the right inner housing are butted, a crank handle shaft mounting hole is formed at the upper end of the front side. The crank handle outer housing is sleeved outside the left inner housing and the right inner housing through guiding cooperation. The lower inner housing is inserted into the crank handle outer housing from the lower end and is butted and sleeved on the lower ends of the left inner housing and the right inner housing by means of clamping. One end of the crank handle shaft is installed in the crank handle shaft mounting hole and is connected to the crank handle shaft, and the other end is connected to the crank handle head.

[0007] As an improvement, the left inner shell and the right inner shell are hollow semi-circular structures. Connecting columns are convexly provided on the inner walls of the front and rear sides at the upper and lower ends of the left inner shell. Corresponding counterbores are provided on the right inner shell. The left inner shell and the right inner shell are sleeved on the lower part of the middle rod in an opposing manner and are fixedly connected by self-tapping screws.

[0008] For further improvement, the handle housing is a cylindrical structure with openings at the upper and lower ends. Guide grooves for sleeving the handle housing are formed on the outer walls of the left inner shell and the right inner shell. Dark grooves are reserved on both sides of the left inner shell and the right inner shell corresponding to the handle installation holes. Corresponding U-shaped slot holes are provided at the upper end of the handle housing. The handle housing is sleeved on the outside of the left inner shell and the right inner shell and is positioned by inserting the edges of the U-shaped slot into the reserved dark grooves.

[0009] Furthermore, the lower ends of the left inner shell and the right inner shell are formed into reduced-diameter sections for sleeving the lower inner shell. Snap fasteners are convexly provided on the outer walls of the reduced-diameter sections. Corresponding snap holes are provided on the inner wall of the lower inner shell. The lower inner shell is sleeved on the outside of the lower ends of the left inner shell and the right inner shell and is snap-connected and positioned with the left inner shell and the right inner shell through the cooperation of the snap holes and the snap fasteners. After the lower inner shell is connected and positioned with the left inner shell and the right inner shell, its outer surface is basically flush with the left inner shell and the right inner shell. A lower convex edge is provided at the lower end of the lower inner shell to abut and position against the lower end of the handle housing.

[0010] For a further step, there are two snap fasteners at the lower ends of the left inner shell and the right inner shell respectively. Four corresponding snap holes are provided on the inner wall of the lower inner shell. Upper convex edges extending outwards are provided on the upper end faces of the left inner shell and the right inner shell. The two ends of the handle housing respectively abut and position against the upper convex edge and the lower convex edge.

[0011] Furthermore, a through hole for passing the handle shaft is horizontally and coaxially provided on the middle rod at the position corresponding to the handle installation hole of the handle inner shell. One end of the handle shaft is square. A square hole for inserting the square end of the handle shaft is provided on the handle. External threads are provided at the other end of the handle shaft and are connected to the ratchet. A plain bearing is provided on the handle shaft between the handle and the middle rod. By rotating the handle, the handle shaft is driven to rotate.

[0012] For a further step, mushroom heads are respectively sleeved at both ends of the through hole of the middle rod. The plain bearing is sleeved on the handle shaft between the mushroom head and the handle. An anti-slip gasket is provided between the other mushroom head and the ratchet.

[0013] Finally, the handle head is composed of a lining and an outer sleeve. The lining is made of plastic and the outer sleeve is made of natural rubber. A through connecting counterbore is provided on the lining. A corresponding internal threaded hole is provided at the lower end of the handle. The handle head is installed on the handle by passing a bolt through the connecting counterbore and screwing it into the internal threaded hole. A plug is sleeved at the outer end of the connecting counterbore.

[0014] Compared with the prior art, the advantages of the present invention are as follows: the crank handle housing is divided into an outer housing and an inner housing. The inner housing is composed of a left inner housing, a right inner housing and a lower inner housing. The outer housing is detachably sleeved outside the left inner housing and the right inner housing. The lower inner housing is fixed by snap connection. When disassembling, as long as the lower inner housing is pulled downwards, it is convenient to replace the outer housing of different styles, improving the aesthetic appearance, facilitating production assembly and changing the shape; the outer sleeve of the crank handle head is made of natural rubber, and the hand feeling is more comfortable during use. The structure of the present invention is simple and reasonable, and the appearance is beautiful. It can not only meet the replacement of various types of outer housings, but also improve the comfort of customers during use, improving the product quality and customer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0016] Figure 2 is Figure 1 exploded view of;

[0017] Figure 3 is Figure 1 longitudinal sectional view of;

[0018] Figure 4 is Figure 1 exploded view of parts of. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present invention will be further described in detail below with reference to the embodiments of the drawings.

[0020] As Figures 1 to 4 shown, a snap-type crank handle outer housing combination structure includes a crank handle housing and a crank handle 1. The crank handle 1 includes a crank handle 11 and a crank handle head 12. The crank handle housing includes a crank handle outer housing 2 and a crank handle inner housing 3. The crank handle inner housing 3 is sleeved on a middle rod 4. The crank handle outer housing 2 is detachably sleeved outside the crank handle inner housing 3. The crank handle inner housing 3 is composed of a left inner housing 31, a right inner housing 32 and a lower inner housing 33. The left inner housing 31 and the right inner housing 32 are sleeved outside the middle rod 4 in a butted manner. After the left inner housing 31 and the right inner housing 32 are butted, a crank handle mounting hole 34 is formed at the upper end of the front side. The crank handle outer housing 2 is sleeved outside the left inner housing 31 and the right inner housing 32 through guiding fit. The lower inner housing 33 is inserted into the crank handle outer housing 2 from the lower end and is sleeved on the lower ends of the left inner housing 31 and the right inner housing 32 in a butted manner through snap connection. A lower convex edge 332 is provided at the lower end of the lower inner housing 33 to abut and position against the lower end of the crank handle outer housing 2. One end of the crank handle 11 is installed in the crank handle mounting hole 34 and is connected to a crank handle shaft 13, and one end is connected to the crank handle head 12. The outer surface of the crank handle head 12 is made of natural rubber.

[0021] The specific structure is as follows: The left inner shell 31 and the right inner shell 32 are hollow semi-cylindrical structures. On the front and rear inner walls at the upper and lower ends of the left inner shell 31, connecting columns 311 are convexly provided. Corresponding counterbores 321 are provided on the right inner shell 32. The left inner shell 31 and the right inner shell 32 are sleeved on the lower part of the middle rod 4 in an opposing manner and are connected and fixed by self-tapping screws 30. The handle housing 2 is a cylindrical structure with openings at the upper and lower ends. The guiding fit means that guiding grooves for the handle housing 2 to be sleeved are formed on the outer walls of the left inner shell 31 and the right inner shell 32. Dark grooves 35 are reserved on both sides of the left inner shell 31 and the right inner shell 32 corresponding to the handle mounting holes 34 of the handle. A corresponding U-shaped slot hole 21 is provided at the upper end of the handle housing 2. Upper convex edges 312 and 322 extending outward are provided on the upper end faces of the left inner shell 31 and the right inner shell 32. The handle housing 2 is sleeved outside the left inner shell 31 and the right inner shell 32 and is positioned by inserting the edges of the U-shaped slot 21 into the reserved dark grooves 35. The upper end of the handle housing 2 abuts against the upper convex edges 312 and 322. Of course, guiding fit structures can also be added between the lower inner shell 33 and the left inner shell 31, the right inner shell 32, and between the lower inner shell 33 and the handle housing 2, depending on the need. The lower ends of the left inner shell 31 and the right inner shell 32 are formed into reduced-diameter sections for the lower inner shell 33 to be sleeved. On the outer walls of the reduced-diameter sections, buckles 36 are convexly provided. Corresponding clamping holes 331 are provided on the inner wall of the lower inner shell 33. The lower inner shell 33 is sleeved on the outer sides of the lower ends of the left inner shell 31 and the right inner shell 32 and is clamped and positioned with the left inner shell 31 and the right inner shell 32 through the cooperation of the clamping holes 331 and the buckles 36. After the lower inner shell 33 is connected and positioned with the left inner shell 31 and the right inner shell 32, its outer surface is basically flush with the left inner shell 31 and the right inner shell 32. There are two buckles 36 at the lower ends of the left inner shell 31 and the right inner shell 32 respectively, and four corresponding clamping holes 331 are provided on the inner wall of the lower inner shell 33. In this way, the handle housing 2 is sleeved outside the handle inner shell 3, and its upper and lower ends respectively abut against the upper convex edges 312 and 322 and the lower convex edge 332 for positioning. For the convenience of disassembly and assembly, the handle housing of this embodiment is installed at the lower part of the middle rod 4 near the connection position with the lower section 5.

[0022] A through hole 41 for the handle shaft 13 to pass through is horizontally coaxially provided on the middle rod 4 at the position corresponding to the handle mounting hole 34 of the handle inner shell 3. One end of the handle shaft 13 is square. A square hole for the square end of the handle shaft 13 to be inserted is provided on the handle 11. External threads are provided at the other end of the handle shaft 13 and are connected to the ratchet 7. Mushroom heads 8, similar to bushings, are respectively sleeved at both ends of the through hole of the middle rod 4. A plain bearing 6 is provided between the handle shaft 13, the handle 11, and the mushroom head 8. By rotating the handle 11, the handle shaft 13 is driven to rotate. An anti-slip gasket 9 is provided between the other mushroom head 8 and the ratchet 7. The working principle of the handle 1 is the same as that of the prior art and will not be elaborated here.

[0023] The rocking head 12 is composed of a lining 121 and an outer sleeve 122. The lining 121 is made of plastic, and the outer sleeve 122 is made of natural rubber. A through connecting counterbore 120 is provided on the lining 121, and a corresponding internal threaded hole 111 is provided at the lower end of the rocking handle 11. The rocking head 12 is installed on the rocking handle 11 by a bolt 10 passing through the connecting counterbore 120 and screwing into the internal threaded hole 111. A plug 20 is sleeved at the outer end of the connecting counterbore 10.

[0024] When the rocking handle housing 2 needs to be replaced, as long as the lower section 5 is separated from the middle rod 4 and the lower inner housing 33 is removed from below, the rocking handle housing 2 can be easily removed for replacement. Different styles of rocking handle housings 2 can be replaced according to needs to increase the aesthetic property. During installation, the rocking handle housing 2 is sleeved from bottom to top outside the left inner housing 31 and the right inner housing 32 through guiding fit, and the lower inner housing 33 is sleeved from below and snap-fitted for positioning, which is very convenient.

[0025] Meanwhile, since the outer sleeve 122 of the rocking head 12 is made of natural rubber, the hand feeling is more comfortable during use, improving the product quality and the customer experience.

[0026] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A snap - type crank handle housing combination structure, including a crank handle housing and a crank handle. The crank handle includes a crank handle shaft and a crank handle head, and is characterized in that: The crank handle housing includes a crank handle outer shell and a crank handle inner shell. The crank handle inner shell is sleeved on the middle rod, and the crank handle outer shell is detachably clamped outside the crank handle inner shell. The crank handle inner shell is composed of a left inner shell, a right inner shell and a lower inner shell. The left inner shell and the right inner shell are coaxially sleeved outside the middle rod in an opposing manner. After the left inner shell and the right inner shell are opposed, a crank handle mounting hole is formed at the upper end of the front side. The crank handle outer shell is sleeved outside the left inner shell and the right inner shell through guiding fit. The lower inner shell is inserted into the crank handle outer shell from the lower end and is coaxially sleeved on the lower ends of the left inner shell and the right inner shell by means of clamping. One end of the crank handle is installed in the crank handle mounting hole and is connected to the crank handle shaft, and the other end is connected to the crank handle head; The left inner shell and the right inner shell are hollow semi-circular structures. Connecting columns are convexly provided on the inner walls of the front and rear sides at the upper and lower ends of the left inner shell. Corresponding counterbores are provided on the right inner shell. The left inner shell and the right inner shell are coaxially sleeved on the lower part of the middle rod and are fixedly connected by self-tapping screws; The crank handle outer shell is a cylindrical structure with openings at the upper and lower ends. The guiding fit means that guiding grooves for the crank handle outer shell to be sleeved are formed on the outer walls of the left inner shell and the right inner shell. Dark grooves are reserved on both sides of the left inner shell and the right inner shell corresponding to the crank handle mounting hole. Corresponding U-shaped slot holes are provided at the upper end of the crank handle outer shell. The crank handle outer shell is sleeved outside the left inner shell and the right inner shell and is positioned by inserting the edge of the U-shaped slot into the reserved dark groove; The lower ends of the left inner shell and the right inner shell are formed into reduced-diameter sections for the lower inner shell to be sleeved. Snap fasteners are convexly provided on the outer walls of the reduced-diameter sections. Corresponding clamping holes are provided on the inner wall of the lower inner shell. The lower inner shell is sleeved on the outer sides of the lower ends of the left inner shell and the right inner shell and is clamped and positioned with the left inner shell and the right inner shell through the cooperation of the clamping holes and the snap fasteners. After the lower inner shell is connected and positioned with the left inner shell and the right inner shell, its outer surface is basically flush with the left inner shell and the right inner shell. A lower convex edge is provided at the lower end of the lower inner shell and abuts against the lower end of the crank handle outer shell for positioning; There are two snap fasteners at the lower ends of the left inner shell and the right inner shell respectively. Four corresponding clamping holes are provided on the inner wall of the lower inner shell. Upper convex edges extending outwards are provided on the upper end faces of the left inner shell and the right inner shell. The two ends of the crank handle outer shell respectively abut against the upper convex edge and the lower convex edge for positioning; A through hole for the crank handle shaft to pass through is horizontally and coaxially provided on the middle rod at the position corresponding to the crank handle mounting hole of the crank handle inner shell. One end of the crank handle shaft is square. A square hole for the square end of the crank handle shaft to be inserted is provided on the crank handle. External threads are provided at the other end of the crank handle shaft and are connected to the ratchet. A plain bearing is provided on the crank handle shaft between the crank handle and the middle rod. By rotating the crank handle, the crank handle shaft is driven to rotate; Mushroom heads are respectively sleeved at both ends of the through hole of the middle rod. The plain bearing is sleeved on the crank handle shaft between the mushroom head and the crank handle. An anti-slip gasket is provided between the other mushroom head and the ratchet.

2. The snap - type crank handle housing combination structure according to claim 1, wherein: The crank handle head is composed of a lining and an outer sleeve. The lining is made of plastic and the outer sleeve is made of natural rubber. A through connecting counterbore is provided on the lining. A corresponding internal threaded hole is provided at the lower end of the crank handle. The crank handle head is installed on the crank handle by a bolt passing through the connecting counterbore and screwing into the internal threaded hole. A plug is sleeved at the outer end of the connecting counterbore.

Images