CN209587086U - Gear - Google Patents

Abstract

The utility model relates to a kind of gear, including gear, the first through hole of polygon is offered in the gear, mold insert is equipped in the first through hole, offers the second through-hole of polygon on the mold insert.The utility model is no longer using the injection structure for being easy sliding teeth, but increase by a mold insert on gear, since mold insert can use the production technology of punching press, therefore the precision of product is higher, enable interior angle on mold insert and tool completely ratcheting, prevent tool from the phenomenon that sliding teeth occur during rotating gear, to improve the reliability and user experience of operation.

Description

Gear

Technical field

The utility model relates to driving member technical field more particularly to a kind of gears.

Background technique

Gear is one of the driving parts being widely used in machine.It can transmit power, and can change revolving speed and return Turn direction.Gear in the prior art is larger by the gearing tolerance of mold injection generally by kirsite integrated injection molding, leads The ratcheting degree of the interior angle of cause tool and gear is lower, and when screwing gear using tool, gear is easy sliding teeth, so as to cause user's body It tests poor.

Utility model content

The purpose of this utility model is to provide a kind of gears, make it during screwing by tool, can be improved The reliability of operation.

In order to solve the above-mentioned technical problem, technical solution provided by the utility model are as follows:

A kind of gear, including gear offer first through hole in the gear, are equipped in the first through hole Mold insert offers the second through-hole on the mold insert.

Wherein, the shape of the mold insert and the shape of first through hole are consistent.

Wherein, the material of the gear is kirsite, and the material of the mold insert is stainless steel.

Wherein, a circle groove is offered on the gear, is equipped with water proof ring in the groove.

Wherein, the first through hole is polygon.

Wherein, the first through hole is hexagon.

Wherein, second through-hole is polygon.

Wherein, second through-hole is hexagon.

Wherein, the cross section of the gear is circle.

The utility model has the following beneficial effects: the utility model no longer uses the injection structure for being easy sliding teeth, but in tooth Increase by a mold insert on wheel, since mold insert can use the production technology of punching press, the precision of product is higher, so that on mold insert Interior angle can be completely ratcheting with tool, prevents tool from the phenomenon that sliding teeth occur during rotating gear, to improve behaviour The reliability and user experience of work.

Detailed description of the invention

Referring to attached drawing, the disclosure of the utility model be will be apparent.It is to be appreciated that these attached drawings are merely illustrative Purpose, and be not intended to and the protection scope of the utility model be construed as limiting.In figure:

Fig. 1 is the schematic perspective view of the gear of an embodiment according to the present utility model.

Fig. 2 is the top view of the gear of an embodiment according to the present utility model.

Fig. 3 is the top view of the mold insert of an embodiment according to the present utility model.

10, gear；1, gear；11, first through hole；12, groove；2, mold insert；21, the second through-hole.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

Fig. 1 is the schematic perspective view of the gear of an embodiment according to the present utility model.

It can be seen from the figure that the gear 10 includes gear 1, first through hole 11 is offered in gear 1, first It is equipped with mold insert 2 in through-hole 11, offers the second through-hole 21 on mold insert 2.Since mold insert 2 can use the production technology of punching press, because The precision of this product is higher, enables interior angle on mold insert 2 and tool completely ratcheting, prevents tool in the mistake of rotation gear 10 Occurs the phenomenon that sliding teeth in journey, to improve the reliability and user experience of operation.

Conventionally, as the hardness of kirsite is lower, after screwing for a long time, the interior angle of gear is prone to wear, and is caused Tool is easy sliding teeth during screwing gear.In the present embodiment, gear 1 uses zinc alloy material, and mold insert 2 is adopted Hardness with stainless steel material, stainless steel is higher, can be used for a long time, to improve the service life of gear 10；And work as After abrasion occurs in mold insert 2, the mold insert 2 of abrasion is only needed to change, replacement cost is low.

As shown in the figure, gear 1 is equipped with a circle groove 12, and water proof ring (not shown go out) is equipped in groove 12, is led to Crossing water proof ring can prevent external water source intrusion internal, to improve the waterproof performance of gear 10.

Fig. 2 is the top view of the gear of an embodiment according to the present utility model.

In the shown embodiment, first through hole 11 is limited to hexagon, it will be appreciated that, in alternative embodiments, First through hole 11 is not limited to hexagon, depending on actual demand.

Fig. 3 is the top view of the mold insert of an embodiment according to the present utility model.

In the shown embodiment, mold insert 2 is limited to hexagon, it will be appreciated that, in alternative embodiments, mold insert 2 It is not limited to hexagon, only need to ensure that the shape of mold insert 2 is consistent with the shape of first through hole 11.

In the shown embodiment, the second through-hole 21 is limited to hexagon, it will be appreciated that, in alternative embodiments, Second through-hole 21 is not limited to hexagon, depending on actual demand.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (7)

1. a kind of gear, which is characterized in that including gear, offer first through hole in the gear, described first It is equipped with mold insert in through-hole, offers the second through-hole on the mold insert；The shape of the mold insert and the shape of first through hole are consistent；Institute Stating first through hole is polygon.

2. gear according to claim 1, which is characterized in that the material of the gear is kirsite, the mold insert Material be stainless steel.

3. gear according to claim 1, which is characterized in that a circle groove is offered on the gear, in the groove Equipped with water proof ring.

4. gear according to claim 1, which is characterized in that the first through hole is hexagon.

5. gear according to claim 1, which is characterized in that second through-hole is polygon.

6. gear according to claim 5, which is characterized in that second through-hole is hexagon.

7. gear according to claim 1, which is characterized in that the cross section of the gear is circle.