Composite bow cam position adjusting structure

Abstract

The utility model discloses a composite bow cam position adjusting structure, which relates to a cam adjusting structure and is characterized in that bow pieces are arranged on two sides of a composite bow cam; the middle cam shaft is movably mounted together with the axis of the composite bow cam; a fixed seat; the movable inner sleeves are located on the two sides of the axis of the composite bow cam, slidably installed with the middle cam shaft and connected with the fixing base in an inserted mode. And the inner hexagonal adjusting nut is mounted in the fixed seat and can rotate by 360 degrees. The fixed seats, the movable inner sleeves and the inner hexagonal adjusting nuts are arranged on the two sides of the composite bow cam, when the cam is adjusted, only the inner hexagonal adjusting nuts on the two sides need to be rotated, the inner hexagonal adjusting nuts drive the movable inner sleeves to move, meanwhile, the composite bow cam is pushed to move axially, and the cam is adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to cam adjusting structure, concretely is a kind of composite bow cam position adjusting structure. BACKGROUND

[0002] In the actual use of composite bow, on the one hand, the left and right sides of the composite bow cam cannot be consistent in weight, and on the other hand, the left and right sides of the cam are not the same in stress, which causes the cam to tilt and further affects the accuracy of archery. Therefore, it is necessary to adjust the position of the cam to achieve left and right stress balance.

[0003] The traditional composite bow adjusts the thickness of the left and right gaskets of the cam or replaces the bow pieces of different weights to achieve stress balance. This is very troublesome to disassemble and assemble, and requires repeated disassembly and assembly testing. The process of adjusting the bow is very cumbersome. INVENTION CONTENTS

[0004] The utility model aims at providing a composite bow cam position adjusting structure to solve the problems raised in the above background.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a composite bow cam position adjusting structure, comprising:

[0006] A composite bow cam is provided with bow pieces on both sides;

[0007] An intermediate cam shaft is movably installed with the shaft center of the composite bow cam;

[0008] A fixed seat;

[0009] A movable inner sleeve is located on both sides of the shaft center of the composite bow cam, and is slidably installed with the intermediate cam shaft and inserted with the fixed seat;

[0010] An inner hexagonal adjusting nut is installed inside the fixed seat and can rotate 360 degrees.

[0011] Preferably, the inner hexagonal adjusting nut is limited by a stop ring to prevent axial movement.

[0012] Preferably, one end of the movable inner sleeve is threaded and connected with the inner hexagonal adjusting nut, and the other end is triangular in shape and can move left and right in the fixed seat without rotating.

[0013] Preferably, the two sides of the intermediate cam shaft are fixed by screws, and one locking screw is installed on the fixed seat on each side for locking the inner hexagonal adjusting nut.

[0014] Preferably, the bow pieces and the fixed seat are fixedly connected by bolts.

[0015] Preferably, an opening for installing the stop ring is provided on the fixed seat.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] The utility model discloses a fixed seat, mobile inner cover, inner hexagon adjusting nut are set up at the both sides of composite bow cam, when adjusting cam, only need to rotate the inner hexagon adjusting nut of both sides, and the inner hexagon adjusting nut takes mobile inner cover movement, simultaneously promotes the axial movement of composite bow cam, realizes the adjustment of cam. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structural drawing of the utility model;

[0019] Figure 2 It is the inner hexagon adjusting nut, mobile inner cover, stop ring structure diagram of the utility model;

[0020] Figure 3 It is the explosion drawing of the utility model;

[0021] Figure 4 It is the sectional view of the utility model;

[0022] Figure 5 It is the mobile inner cover structure diagram of the utility model.

[0023] In the drawing: 1, composite bow cam;2, bow piece;3, fixed seat;4, bolt;5, inner hexagon adjusting nut;6, mobile inner cover;7, intermediate camshaft;8, stop ring;9, tight screw;10, screw. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] Please refer to Figure 1 And Figure 3 Disclosed is a composite bow cam position adjusting structure, which comprises:

[0026] The composite bow cam 1 has a bow piece 2 on each side;

[0027] The fixed seat 3 and the bow piece 2 are connected and fixed by two bolts 4.

[0028] Each side of the composite bow cam 1 has an inner hexagon adjusting nut 5, which is installed in the fixed seat 3. The inner hexagon adjusting nut 5 can rotate by 360 degrees and is fixed by a stop ring 8 to prevent axial movement. The stop ring 8 has a C-shaped structure.

[0029] As Figure 1 , Figure 3 and Figure 4 shown, the fixed seat 3 is provided with an opening for installing the stop ring 8, and an annular groove is provided on the outside of the hexagonal adjusting nut 5. When installing the stop ring 8, the stop ring 8 and the two center gaskets on both sides are placed in the opening and coaxial with the opening as much as possible, and then the hexagonal adjusting nut 5 is rotated and installed on the moving inner sleeve 6. With the rotation of the hexagonal adjusting nut 5, until you hear a click, the stop ring 8 can be installed with the hexagonal adjusting nut 5.

[0030] There are two moving inner sleeves 6 on both sides of the compound bow cam 1. One end of the moving inner sleeve 6 is threaded and connected with the two hexagonal adjusting nuts 5 on both sides, and the other end is triangular (see Figure 5 for details), which can move left and right in the fixed seat 3 without rotating;

[0031] The intermediate camshaft 7 is fixed by two screws 10 to prevent it from coming out. The screw 10 is threaded on both ends of the intermediate camshaft 7, and the screw 10 is inside the hexagonal adjusting nut 5, which can avoid coming out. As shown in Figure 4 , one locking screw 9 is installed on the fixed seat 3 on both sides, which can lock the hexagonal adjusting nut 5 to prevent loosening during shooting.

[0032] The specific adjustment process is as follows: rotate the left hexagonal adjusting nut 5 clockwise with a hexagonal wrench, and the left moving inner sleeve 6 connected with it will shrink into the fixed seat 3. At this time, rotate the right hexagonal adjusting nut 5 counterclockwise, and the right moving inner sleeve 6 connected with it will move out of the fixed seat 3, thereby pushing the cam to move to the left, until the cam cannot move without gap on both sides.

[0033] If the cam needs to move to the right, first rotate the right hexagonal adjusting nut 5 clockwise, and the right moving inner sleeve 6 connected with it will shrink into the fixed seat 3. At this time, rotate the left hexagonal adjusting nut 5 counterclockwise, and the left moving inner sleeve 6 connected with it will move out of the fixed seat 3, thereby pushing the cam to move to the right, so as to realize the position adjustment of the cam.

[0034] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A compound bow cam position adjustment structure, characterized by, The utility model relates to a compound bow cam, which comprises: a compound bow cam provided with bow pieces on both sides; a middle cam shaft movably installed with the shaft center of the compound bow cam; a fixed seat; a moving inner sleeve located on both sides of the shaft center of the compound bow cam, slidably installed with the middle cam shaft, and inserted with the fixed seat; a hexagonal adjusting nut installed inside the fixed seat and capable of rotating by 360 degrees.

2. The compound-bow cam lobe position adjustment structure of claim 1, wherein: The hexagonal adjusting nut is limited by a stop ring to prevent axial movement.

3. The compound-bow cam lobe position adjustment structure of claim 2, wherein: One end of the moving inner sleeve is threaded and connected with the hexagonal adjusting nut, and the other end is triangular and capable of moving left and right in the fixed seat without rotating.

4. The compound-bow cam lobe position adjustment structure of claim 1, wherein: The middle cam shaft is fixed on both sides by screws, and one locking screw is installed on the fixed seat on each side to lock the hexagonal adjusting nut.

5. The compound-bow cam lobe position adjustment structure of claim 4, wherein: The bow pieces and the fixed seat are fixedly connected by bolts.

6. A compound-bow cam lobe position adjustment structure according to claim 5, wherein: An opening for installing the stop ring is formed on the fixed seat.

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