CN210892862U

CN210892862U - Abrasionproof decreases catapult

Info

Publication number: CN210892862U
Application number: CN201921846041.7U
Authority: CN
Inventors: 李伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-06-30
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses an abrasionproof decreases catapult, including bow frame and rubber band, the bow frame includes the handle and is fixed in the bow fork on the handle, the rubber band is connected in the end of bow fork, the end of bow fork is provided with the connection the fixed orifices of rubber band, the bow fork corresponds the top of fixed orifices is provided with runner assembly, the rubber band is hugged closely after taut runner assembly rotates with the rotation along with runner assembly. The beneficial effects of the above technical scheme are: when using the catapult, can exert oneself and stimulate the rubber band for it is tight between rubber band and the bow frame, the runner assembly who sets up turns into the rotation of runner assembly with the angle change of rubber band, makes the rubber band can hug closely runner assembly when taut and not produce the friction with the bow frame, can increase the life-span of rubber band, avoids frequent change, has practiced thrift the cost.

Description

Abrasionproof decreases catapult

Technical Field

The utility model relates to a catapult technical field, concretely relates to abrasionproof decreases catapult.

Background

The catapult generally comprises a bow frame and a rubber band connected to the bow frame, and the elastic force of the rubber band is used for quickly ejecting the shot to form a certain hitting force. However, the existing rubber band can rub against the bow frame after being tensioned, so that the rubber band is easily damaged by friction.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides an abrasionproof decreases catapult can reduce the wearing and tearing of rubber band, prolongs the life of rubber band.

The utility model provides a pair of abrasionproof decreases catapult, including bow frame and rubber band, the bow frame includes the handle and is fixed in the bow fork on the handle, the rubber band is connected in the end of bow fork, the end of bow fork is provided with the connection the fixed orifices of rubber band, the bow fork corresponds the top of fixed orifices is provided with runner assembly, the rubber band is hugged closely after taut runner assembly rotates with the rotation along with runner assembly.

The beneficial effects of the above technical scheme are: when using the catapult, can exert oneself and stimulate the rubber band for it is tight between rubber band and the bow frame, the runner assembly who sets up turns into the rotation of runner assembly with the angle change of rubber band, makes the rubber band can hug closely runner assembly when taut and not produce the friction with the bow frame, can increase the life-span of rubber band, avoids frequent change, has practiced thrift the cost.

Furthermore, the side of the bow fork is provided with an installation seam corresponding to the position of the fixing hole, and the installation seam is communicated with the fixing hole and the external space. The both ends coincidence of rubber band becomes the double strand, the one end of keeping away from the end behind the rubber band coincidence can form a lantern ring, directly overlaps the rubber band in the fixed orifices through the installation seam for be connected between rubber band and the bow frame need not additionally use bandage or compact heap.

Further, the rotating assembly comprises a bearing rotatably arranged on the upper portion of the fixing hole, and a fixing shaft used for mounting the bearing is arranged on the upper portion of the fixing hole. The bearing can smoothly rotate around the fixed shaft, so that the rubber band can change the angle at will without friction with the bow frame.

Furthermore, a groove is formed in the contact part of the bearing and the rubber band. The groove can increase the contact area of the rubber band and the bearing, so that the rubber band is less in pressure and less prone to fracture.

Further, the runner assembly includes the concatenation swivel becket, the concatenation swivel becket includes the semicircle ring that two locks are connected, the upper portion of fixed orifices is provided with and is used for the installation axle of concatenation swivel becket. The manufacturing difficulty of the bow frame can be reduced by the splicing rotating ring, and the bow frame can be installed after being manufactured.

Further, the two semicircular rings are fixedly connected through screws.

Furthermore, the two semicircular rings are clamped together through a buckle.

Further, the rubber band is in a hose shape. The rubber band can pass through the mounting seam after the compression to get into the reconversion after the fixed orifices completely, and the rubber band can not break away from the fixed orifices from the mounting seam.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.

Reference numerals: handle 100, bow 200, fixing hole 210, mounting slot 211, fixed axle 212, bearing 213, independent block 214, rubber band 300, semicircular ring 400, through hole 410, screw 420 and screw hole 430.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship as shown in the drawings for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media.

Example 1

As shown in fig. 1, the embodiment provides an abrasionproof decreases catapult, including bow frame and rubber band 300, the bow frame adopts metal casting or forges and forms, and is sturdy and durable more, the bow frame includes handle 100 and the bow fork 200 that is fixed in on handle 100, bow fork 200 has two ends, rubber band 300 is connected in the end of bow fork 200, the end of bow fork 200 is provided with the connection the fixed orifices 210 of rubber band 300, bow fork 200 corresponds the top of fixed orifices 210 is provided with rotating assembly, rubber band 300 is hugged closely after taut rotating assembly rotates with the rotation along with rotating assembly.

When using the catapult, the user can power pulling rubber band 300 for it is tight between rubber band 300 and the bow frame, and the runner assembly who sets up turns into runner assembly's rotation with the angular variation of rubber band 300, makes rubber band 300 can hug closely runner assembly when taut and not produce the friction with the bow frame, can increase rubber band 300's life-span, avoids frequent change, has practiced thrift the cost.

In order to facilitate the installation of the rubber band 300, an installation slit 211 is provided at a position corresponding to the fixing hole 210 on the side surface of the yoke 200, and the installation slit 211 communicates the fixing hole 210 with an external space. When the bow fork 200 is installed, two rubber bands 300 are fixed at two ends of the bow fork 200, and after the two rubber bands 300 are fixed on the bow fork 200, the free ends of the two rubber bands 300 are connected together through a rubber block, and the rubber block is used for covering the shot when in use. For more convenient connect the rubber band 300 on the bow frame, with every the coincidence of the both ends of rubber band 300 becomes double strand, the one end of keeping away from the end behind the coincidence of rubber band 300 can form a lantern ring, directly overlaps rubber band 300 in fixed orifices 210 through installation seam 211 for be connected between rubber band 300 and the bow frame and need not additionally use bandage or compact heap. Further, the rubber band 300 is in the shape of a hose. The rubber band 300 can pass through the mounting slit 211 after being compressed and be restored after completely entering the fixing hole 210, and the rubber band 300 does not separate from the fixing hole 210 from the mounting slit 211.

The rotating assembly includes a bearing 213 rotatably disposed at an upper portion of the fixing hole 210, and a fixing shaft 212 for mounting the bearing 213 is disposed at an upper portion of the fixing hole 210. In the manufacturing process, in order to mount the bearing 213 on the fixed shaft 212, the fixed shaft 212 and the bow frame must be manufactured separately, so that the bearing 213 can be sleeved on the fixed shaft 212, since the position of the bow fork 200 corresponding to the fixed hole 210 is provided with the mounting seam 211 and the upper end of the fixed hole 210 is opened, the independent block 214 is formed between the mounting seam 211 and the position of the mounting fixed shaft 212, in order to mount the fixed shaft 212 and connect and fix the independent block 214, the fixed shaft 212 is welded on the upper part of the fixed hole 210 by adopting a welding mode, so that the independent block 214 is welded and fixed with the fixed shaft 212, the independent block 214, the fixed shaft 212 and the inner side of the bow frame are enclosed to form the fixed hole 210, the bearing 213 can smoothly rotate around the fixed shaft 212, so that the rubber band 300 can freely change the angle without friction with the bow frame.

The contact part of the bearing 213 and the rubber band 300 is provided with a groove. The groove can increase the contact area between the rubber band 300 and the bearing 213, so that the rubber band 300 is less in pressure and less prone to fracture.

Example 2

The main structure of this embodiment is the same as that of embodiment 1, and this embodiment proposes another scheme for the rotating assembly for more convenient manufacturing. Specifically, referring to fig. 2, the rotating assembly includes a splicing rotating ring, the splicing rotating ring includes two half rings 400 connected by buckling, and the upper portion of the fixing hole 210 is provided with an installation shaft for installing the splicing rotating ring. This makes can be with installation axle integrated manufacturing shaping when the bow frame is makeed, need not weld afterwards, and the concatenation rotating ring that semicircle ring 400 buckled can install after the bow frame preparation is accomplished.

The two semicircular rings 400 are fixedly connected through screws 420, one semicircular ring 400 is provided with a penetrating hole 410, the other semicircular ring 400 is provided with a screw hole 430, the screws 420 penetrate through the penetrating holes 410 and are screwed into the screw holes 430, and the two semicircular rings 400 are fixed. In order to avoid the screw 420 to cause the influence to the rubber band 300, set up the mounted position of screw 420 at the both ends of concatenation swivel becket, can also sink into the concatenation swivel becket with screw 420 for screw 420 is not outstanding, just can not cause the scratch to rubber band 300, and is further, two semicircle ring 400 can also be in the same place through the buckle joint. The buckle sets up in the inboard of semicircle ring 400, and is invisible behind the lock, the buckle is including setting up the card tongue on a semicircle ring 400 and setting up the card hole on another semicircle ring 400, can be together fixed with two semicircle rings 400 through the cooperation in card tongue and card hole.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides an abrasionproof decreases catapult, includes bow frame and rubber band (300), its characterized in that, the bow frame includes handle (100) and bow fork (200) on being fixed in handle (100), rubber band (300) are connected in the end of bow fork (200), the end of bow fork (200) is provided with the connection fixed orifices (210) of rubber band (300), bow fork (200) correspond the top of fixed orifices (210) is provided with runner assembly, rubber band (300) are hugged closely after taut runner assembly rotates with the rotation along with runner assembly.

2. The wear-resistant slingshot of claim 1, wherein the side of said bow (200) is provided with a mounting slot (211) corresponding to the location of said fixing hole (210), said mounting slot (211) communicating said fixing hole (210) with the external space.

3. The wear prevention slingshot of claim 2, wherein said rotating assembly includes a bearing (213) rotatably mounted to an upper portion of said mounting hole (210), said upper portion of said mounting hole (210) being provided with a stationary shaft (212) for mounting said bearing (213).

4. A wear prevention slingshot according to claim 3 wherein the bearing (213) is provided with a recess in the region where it contacts the rubber band (300).

5. The wear prevention slingshot of claim 2, wherein the rotating assembly comprises a split rotating ring comprising two snap-fit connected semi-circular rings (400), and wherein the upper portion of the fixing hole (210) is provided with a mounting shaft for mounting the split rotating ring.

6. The wear protection slingshot of claim 5, wherein two said semi-rings (400) are fixedly attached by screws (420).

7. A wear resistant slingshot according to claim 5 wherein two said semi-rings (400) snap together by snap fit.

8. A wear resistant slingshot according to any one of claims 1 to 7 wherein the rubber band (300) is hose-like.