CN202851893U - Gearbox - Google Patents
Gearbox Download PDFInfo
- Publication number
- CN202851893U CN202851893U CN 201220598205 CN201220598205U CN202851893U CN 202851893 U CN202851893 U CN 202851893U CN 201220598205 CN201220598205 CN 201220598205 CN 201220598205 U CN201220598205 U CN 201220598205U CN 202851893 U CN202851893 U CN 202851893U
- Authority
- CN
- China
- Prior art keywords
- middle cover
- fore shell
- gear
- groove
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- General Details Of Gearings (AREA)
Abstract
The utility model discloses a gearbox. The gearbox comprises a front shell (1), a middle sleeve (2) and a rear cover (3), wherein the front shell (1) and the middle sleeve (2) are connected with each other in a clamping manner, the middle sleeve (2) and the rear cover (3) are connected with each other in a clamping manner, and the front shell (1) and the middle sleeve (2) are provided with reinforcing devices for improving the reliability of the connection between the front shell (1) and the middle sleeve (2). The gearbox consumes few materials, needs a simple assembly process, and is high in working reliability and low in cost.
Description
Technical field
The utility model relates to the parts that use on a kind of chargeable electric drill, specifically is a kind of gear-box.
Background technique
The gear-box of prior art as shown in Figure 1, it comprises fore shell, middle cover and bonnet, described fore shell is connected or clamping with middle cover screw, described middle cover and bonnet clamping.There is following defective in the gear-box of said structure in the using process of reality: to arrange when adopting screw to connect screw fore shell and in the link position that puts, thereby increased the external diameter of product, so not only waste material, and cause assembly technology comparatively complicated owing to having increased production process.Adopt clamping then to require the intensity of housing (being case material with the ABS material usually) material higher, but when product carries out life test, because the raising of product temperature easily causes the intensity variation of this housing, thereby cause fore shell and middle cover to be thrown off, and then affect the normal operation of chargeable electric drill, also can increase the cost of gear-box simultaneously.Therefore, for these reasons, demand urgently needing the gear-box that a kind of materials are few, assembly technology is simple, functional reliability is high and cost is low, to address the above problem.
The model utility content
The technical problems to be solved in the utility model is, overcomes the defective of above prior art, and the gear-box that a kind of materials are few, assembly technology is simple, functional reliability is high and cost is low is provided.
The technical solution of the utility model is, a kind of gear-box is provided, and comprises fore shell, middle cover and bonnet, described fore shell and middle cover clamping, described middle cover and bonnet clamping; Described fore shell and in put the stiffening device that also is provided with for increasing fore shell and middle cover connection reliability.
Described stiffening device is two I-shaped cards; Described two I-shaped cards be arranged on symmetrically fore shell and in put.
Described fore shell and in put the groove that is provided with to enter for the I-shaped holding, the part of described groove is located on the fore shell, puts during another part of described groove is located at; Described I-shaped card is stuck in the groove.
After adopting above structure, the utility model compared with prior art has the following advantages:
The utility model gear-box fore shell and in put the stiffening device that also is provided with for increasing fore shell and middle cover connection reliability, strengthened the connection reliability of fore shell and middle cover by this stiffening device, and can not increase the external diameter of product, so not only saved material, and owing to only increased an I-shaped spare, so assembly technology is comparatively simple.In addition, when product carries out life test, owing to increased I-shaped spare, guaranteed that fore shell and middle cover are difficult for throwing off, thereby guaranteed the normal operation of chargeable electric drill, also can not increase the cost of gear-box simultaneously.
As improvement, described I-shaped card and fore shell, the face that middle cover is relative are cambered surface; The internal surface of described cambered surface and groove fits, and can guarantee that like this I-shaped spare difficult drop-off and surface of contact increase, thereby has improved the connection reliability of fore shell and middle cover.
Description of drawings
Fig. 1 is the explosive view of prior art gear-box.
Fig. 2 is the explosive view of the utility model gear-box.
Fig. 3 is the erection drawing of the utility model gear-box.
Shown in the figure 1, fore shell, 2, middle cover, 3, bonnet, 4, the I-shaped card, 5, groove, 6, cambered surface.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Such as Fig. 2, shown in Figure 3, a kind of gear-box of the utility model comprises fore shell 1, middle cover 2 and bonnet 3, described fore shell 1 and middle cover 2 clampings, and described middle cover 2 and bonnet 3 clampings, both are annular clamping; Also be provided with on described fore shell 1 and the middle cover 2 for increasing the stiffening device of fore shell 1 with middle cover 2 connection reliability.
Described stiffening device is two I-shaped cards 4; Described two I-shaped cards 4 are arranged on fore shell 1 and the middle cover 2 symmetrically, and namely the connecting line of two I-shaped cards 4 is crossed the axis of gear-box, namely is symmetrical arranged centered by the axis of gear-box.
Described fore shell 1 and middle cover 2 are provided with the groove 5 of inserting for I-shaped card 4, and the part of described groove 5 is located on the fore shell 1, and another part of described groove 5 is located on the middle cover 2, namely only has fore shell 1 and middle cover 2 to couple together and is only a groove; Described I-shaped card 4 is stuck in the groove 5, prevents fore shell 1 and 2 disengagements of middle cover.
Described I-shaped card 4 and fore shell 1, middle cover 2 relative faces are cambered surface 6; Described cambered surface 6 fits with the internal surface of groove 5.
Below only be described with regard to most preferred embodiment of the present utility model, but can not be interpreted as it is limitations on claims.The utility model is not limited only to above embodiment, and its concrete structure allows to change.In every case the various variations of doing in the protection domain of the utility model independent claims are all in protection domain of the present utility model.
Claims (4)
1. a gear-box comprises fore shell (1), middle cover (2) and bonnet (3), described fore shell (1) and middle cover (2) clamping, described middle cover (2) and bonnet (3) clamping; It is characterized in that: also be provided with on described fore shell (1) and the middle cover (2) for increasing the stiffening device of fore shell (1) with middle cover (2) connection reliability.
2. gear-box according to claim 1, it is characterized in that: described stiffening device is two I-shaped cards (4); Described two I-shaped cards (4) are arranged on fore shell (1) and the middle cover (2) symmetrically.
3. gear-box according to claim 2, it is characterized in that: described fore shell (1) and middle cover (2) are provided with the groove (5) of inserting for I-shaped card (4), the part of described groove (5) is located on the fore shell (1), and another part of described groove (5) is located on the middle cover (2); Described I-shaped card (4) is stuck in the groove (5).
4. gear-box according to claim 1 is characterized in that: described I-shaped card (4) and fore shell (1), the face that middle cover (2) is relative are cambered surface (6); Described cambered surface (6) fits with the internal surface of groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598205 CN202851893U (en) | 2012-11-13 | 2012-11-13 | Gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598205 CN202851893U (en) | 2012-11-13 | 2012-11-13 | Gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851893U true CN202851893U (en) | 2013-04-03 |
Family
ID=47983098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220598205 Expired - Fee Related CN202851893U (en) | 2012-11-13 | 2012-11-13 | Gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851893U (en) |
-
2012
- 2012-11-13 CN CN 201220598205 patent/CN202851893U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20151113 |
|
| EXPY | Termination of patent right or utility model |