CN209959816U

CN209959816U - Motor vehicle tensioner

Info

Publication number: CN209959816U
Application number: CN201920597367.4U
Authority: CN
Inventors: 林德里
Original assignee: ZHEJIANG RETTER VEHICLE PARTS Co Ltd
Current assignee: ZHEJIANG RETTER VEHICLE PARTS Co Ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-01-17
Anticipated expiration: 2029-04-28

Abstract

The utility model discloses a motor vehicle tensioner, which belongs to the field of motor vehicle tensioners, and comprises a supporting frame, wherein the upper part of the supporting frame is provided with two through holes, the lower part of the supporting frame is provided with a through groove, the upper end of the supporting frame is provided with a guide hole, a threaded rod is sleeved in the guide hole in a sliding way, a supporting shaft is connected in the through groove in a sliding way, the surface of the right end of the supporting shaft is provided with a positioning groove, the outer side of the supporting shaft is provided with a bearing, a tensioning wheel is arranged at the outer side of the bearing, a supporting sleeve is sleeved at the outer side of the supporting shaft in a sliding way, the upper end of the supporting sleeve is fixedly connected with the threaded rod, the upper end of the threaded rod is connected with a nut through a thread, the lower end of the nut, the chain can not be loosened, frequent adjustment is not needed, and the chain adjusting device is simple in structure and low in manufacturing cost.

Description

Motor vehicle tensioner

Technical Field

The utility model relates to a motor vehicle rises and tightly installs the field, more specifically says, relates to a motor vehicle rises and tightly installs.

Background

In a motor vehicle transmission system, particularly a motorcycle and a battery car, chain transmission is mostly adopted, but during chain transmission, a chain is often loosened, so that the chain and a chain wheel are easy to fall off. Therefore, the chain is extruded by adopting a tensioner at present, and the chain is prevented from loosening.

Generally, a support frame type tensioner is adopted to realize tensioning of a chain by adjusting the height of a tensioning wheel, the height of the tensioning wheel is changed by mainly adopting the matching of a threaded rod and a nut, but the nut is easy to loosen due to long-term vibration after being installed, so that the threaded rod drives the tensioning wheel to descend, the tensioning wheel is difficult to keep in position, the tensioning is ineffective, and the irregular adjustment is needed. Accordingly, there is a need for improvements in the art.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a motor vehicle rises and tightly installs, it is through the cooperation of shell fragment and spacing dop on the spacing groove that sets up annular equipartition range and the nut on the support frame, can prevent not hard up of nut for it is good to rise and tightly installs retentivity, can not make the chain take place to relax, need not frequent adjustment, simple structure moreover, low in manufacturing cost.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A motor vehicle tensioner comprises a support frame, wherein two through holes are formed in the upper portion of the support frame, a through groove is formed in the lower portion of the support frame, a guide hole is formed in the upper end of the support frame, a threaded rod is sleeved in the guide hole in a sliding mode, a support shaft is connected in the through groove in a sliding mode, a positioning groove is formed in the surface of the right end of the support shaft, a bearing is installed on the outer side of the support shaft, a tensioning wheel is installed on the outer side of the bearing, a support sleeve is sleeved on the outer side of the support shaft in a sliding mode, the threaded rod is fixedly connected to the upper end of the support sleeve, a nut is connected to the upper end of the threaded rod through threads, a support ring is arranged at the lower end of the nut, a second elastic sheet is arranged on the outer surface of the support ring, a limiting chuck is arranged, the loosening of the nut can be prevented, the tension device has good holding performance, the chain cannot be loosened, frequent adjustment is not needed, the structure is simple, and the manufacturing cost is low.

Further, the upper end of support frame is provided with the spacing groove, the spacing groove is the annular equipartition and arranges, spacing inslot joint has spacing dop, through the cooperation of spacing groove and spacing dop, can prevent that the nut from being shaken and taking place to rotate, leads to its and threaded rod's screw-thread fit to appear becoming flexible to lead to the threaded rod to shift.

Further, the bilateral symmetry of tight pulley that rises is provided with the bearing groove, install the bearing in the bearing groove, the left end and the back shaft contact of left bearing, the bearing and the support frame contact on right side can be used for installing the bearing through the design of bearing groove, and the installation of bearing makes the tight pulley operation more smooth and easy that rises.

Furthermore, the right-hand member of supporting the cover is provided with first shell fragment, the lower extreme of first shell fragment is provided with the locating piece, locating piece and constant head tank joint can be through the elastic action of first shell fragment for locating piece chucking constant head tank, prevent that the back shaft from taking place axial displacement.

Furthermore, the support ring and the nut are of an integrated structure, a threaded hole is formed in the nut, the threaded hole is connected with the threaded rod through threads, and the height of the threaded rod can be adjusted through the action of the threads through the matching of the threaded rod and the threaded hole, so that the height of the tension wheel is adjusted.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) this scheme is through setting up the cooperation of shell fragment and spacing dop on the spacing groove and the nut that the annular equipartition was arranged on the support frame, can prevent not hard up of nut for the tight ware retentivity that rises is good, can not make the chain take place to relax, need not frequent adjustment, simple structure moreover, low in manufacturing cost.

(2) The upper end of support frame is provided with the spacing groove, and the spacing groove is the annular equipartition and arranges, and spacing inslot joint has spacing dop, through the cooperation of spacing groove and spacing dop, can prevent that the nut from receiving to shake to take place to rotate, leads to its and the screw-thread fit of threaded rod to appear becoming flexible to lead to the threaded rod to shift.

(3) The two sides of the tension pulley are symmetrically provided with bearing grooves, bearings are installed in the bearing grooves, the left end of the left bearing is in contact with the supporting shaft, the right bearing is in contact with the supporting frame, the bearings can be installed through the design of the bearing grooves, and the tension pulley can run more smoothly due to the installation of the bearings.

(4) The right-hand member of supporting the cover is provided with first shell fragment, and the lower extreme of first shell fragment is provided with the locating piece, locating piece and constant head tank joint, through the elastic action of first shell fragment, can be so that locating piece chucking constant head tank, prevent that the back shaft from taking place axial displacement.

(5) The support ring and the nut are of an integrated structure, a threaded hole is formed in the nut, the threaded hole is connected with the threaded rod through threads, and the height of the threaded rod can be adjusted through the threaded action through the matching of the threaded rod and the threaded hole, so that the height of the tension wheel is adjusted.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a side view of the support frame of the present invention;

fig. 3 is a top view of the support frame of the present invention;

fig. 4 is a top view of the nut of the present invention;

FIG. 5 is an enlarged view of the point A of the present invention;

FIG. 6 is an enlarged view of the point B of the present invention;

fig. 7 is a side view of the tension roller of the present invention.

The reference numbers in the figures illustrate:

the device comprises a support frame 1, a through hole 2, a through groove 3, a guide hole 4, a limiting groove 5, a support shaft 6, a positioning groove 7, a bearing 8, a tension wheel 9, a support sleeve 10, a threaded rod 11, a first elastic sheet 12, a positioning block 13, a nut 14, a support ring 15, a threaded hole 16, a second elastic sheet 17, a limiting chuck 18 and a bearing groove 19.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-7, a motor vehicle tensioner comprises a support frame 1, referring to fig. 1-7, the upper portion of the support frame 1 is provided with two through holes 2, the through holes 2 are used for installing bolts, the tensioner is installed on a motor vehicle, the lower portion of the support frame 1 is provided with a through groove 3, the through groove 3 provides a moving space for a support shaft 6, so that the support shaft 6 can adjust the height, the upper end of the support frame 1 is provided with a guide hole 4, a threaded rod 11 is slidably sleeved in the guide hole 4, the support shaft 6 is slidably connected in the through groove 3, a positioning groove 7 is arranged on the right end surface of the support shaft 6, a bearing 8 is installed on the outer side of the support shaft 6, a tension wheel 9 is installed on the outer side of the support shaft 6, a support sleeve 10 is slidably sleeved on the outer side of, the lower extreme of nut 14 is provided with support ring 15, and the surface of support ring 15 is provided with second shell fragment 17, and the lower extreme of second shell fragment 17 is provided with spacing dop 18, and the lower extreme of spacing dop 18 is globular.

Referring to fig. 1, 3, 6 and 7, the upper end of the support frame 1 is provided with a limiting groove 5, the limiting groove 5 is annularly and uniformly arranged, a limiting chuck 18 is clamped in the limiting groove 5, the nut 14 can be prevented from rotating under the action of an earthquake through the matching of the limiting groove 5 and the limiting chuck 18, and the nut is loosened in threaded matching with the threaded rod 11, so that the threaded rod 11 is displaced, bearing grooves 19 are symmetrically arranged on two sides of the tension pulley 9, the bearing 8 is installed in the bearing groove 19, the left end of the left bearing 8 is in contact with the support shaft 6, the right bearing 8 is in contact with the support frame 1, the bearing 8 can be installed through the design of the bearing grooves 19, and the tension pulley 9 can run more smoothly through the installation of the bearing 8.

Referring to fig. 4-5, a first elastic sheet 12 is arranged at the right end of the support sleeve 10, a positioning block 13 is arranged at the lower end of the first elastic sheet 12, the positioning block 13 is connected with the positioning groove 7 in a clamping manner, the positioning block 13 can be tightly clamped on the positioning groove 7 under the elastic action of the first elastic sheet 12, the support shaft 6 is prevented from moving axially, the support ring 15 and the nut 14 are of an integrated structure, a threaded hole 16 is formed in the nut 14, the threaded hole 16 is in threaded connection with the threaded rod 11, the height of the threaded rod 11 can be adjusted through the threaded action through the matching of the threaded rod 11 and the threaded hole 16, and.

After the tensioner is installed on a motor vehicle, generally, the upper end of a tension wheel 9 is engaged with a chain, when the height of the tension wheel 9 needs to be adjusted, a wrench is used to rotate a nut 14, the nut 14 and a threaded rod 11 generate a threaded motion to generate a relative displacement, so that the threaded rod 11 moves upwards, the threaded rod 11 drives a support sleeve 10 to move upwards, the support sleeve 10 drives a support shaft 6 to move upwards, the support shaft 6 drives a bearing 8 to move upwards, the bearing 8 drives the tension wheel 9 to move upwards to extrude the chain, so that the chain is tensioned, when the nut 14 rotates, the nut 14 drives a support ring 15 to rotate, the support ring 15 drives a second elastic sheet 17 to rotate, the second elastic sheet 17 drives a limit chuck 18 to rotate, because the lower end of the limit chuck 18 is spherical, the limit groove 5 is a smooth groove, and the second elastic sheet 17 has elasticity, so that the limit chuck 18 can slide out of the limit groove 5, when, the limiting chuck 18 is clamped into the other limiting groove 5, the nut 14 cannot rotate when being shaken through the matching of the limiting groove 5 and the limiting chuck 18, the connection stability of the nut 14 and the threaded rod 11 is ensured, the position retentivity of the tension wheel 9 is good, frequent adjustment is not needed, and the tensioner is simple in structure and low in manufacturing cost.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a motor vehicle tensioner, includes support frame (1), its characterized in that: the upper portion of the support frame (1) is provided with two through holes (2), the lower portion of the support frame (1) is provided with a through groove (3), the upper end of the support frame (1) is provided with a guide hole (4), a threaded rod (11) is sleeved in the guide hole (4) in a sliding mode, a support shaft (6) is connected in the through groove (3) in a sliding mode, a positioning groove (7) is formed in the surface of the right end of the support shaft (6), a bearing (8) is installed on the outer side of the support shaft (6), a tension wheel (9) is installed on the outer side of the bearing (8), a support sleeve (10) is sleeved on the outer side of the support shaft (6) in a sliding mode, the upper end of the support sleeve (10) is fixedly connected with the threaded rod (11), the upper end of the threaded rod, the outer surface of the support ring (15) is provided with a second elastic sheet (17), the lower end of the second elastic sheet (17) is provided with a limiting chuck (18), and the lower end of the limiting chuck (18) is spherical.

2. The motor vehicle tensioner according to claim 1, wherein: the upper end of support frame (1) is provided with spacing groove (5), spacing groove (5) are annular equipartition and arrange, spacing dop (18) have been connect to the joint in spacing groove (5).

3. The motor vehicle tensioner according to claim 1, wherein: the bilateral symmetry of tight pulley (9) that rises is provided with bearing groove (19), install bearing (8) in bearing groove (19), the left end and back shaft (6) contact of left bearing (8), bearing (8) on right side and support frame (1) contact.

4. The motor vehicle tensioner according to claim 1, wherein: the right end of the support sleeve (10) is provided with a first elastic sheet (12), the lower end of the first elastic sheet (12) is provided with a positioning block (13), and the positioning block (13) is connected with the positioning groove (7) in a clamping mode.

5. The motor vehicle tensioner according to claim 1, wherein: the support ring (15) and the nut (14) are of an integrated structure, a threaded hole (16) is formed in the nut (14), and the threaded hole (16) is in threaded connection with the threaded rod (11).