CN207830484U - The expansion tightening wheel of tension device - Google Patents
The expansion tightening wheel of tension device Download PDFInfo
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- CN207830484U CN207830484U CN201820159350.6U CN201820159350U CN207830484U CN 207830484 U CN207830484 U CN 207830484U CN 201820159350 U CN201820159350 U CN 201820159350U CN 207830484 U CN207830484 U CN 207830484U
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- bearing
- mounting portion
- tension device
- dustproof cover
- sealing
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Abstract
The utility model provides a kind of expansion tightening wheel of tension device, belongs to auto parts and components field.The expansion tightening wheel of this tension device includes bearing, bearing outside has cylindrical shell, shell there are two and along the center symmetric setting of bearing, annular flange is all had on the inside of two shells, section of the annular flange in bearing axial direction is L-shaped, and annular flange is made of the mounting portion one and horizontally disposed mounting portion two being vertically arranged, and two mounting portions one stick together, the inside of two mounting portion two all has cyclic annular positioning region, two positioning regions respectively with the outer ring both ends of the surface tight abutment of bearing；Dustproof cover is equipped in this shell far from upper arm, dustproof cover is sleeved on outside mounting portion two, and there is annular sealing portion, sealing are pressed on the lateral wall of dustproof cover one end on mounting portion one, the dustproof cover other end is in closed, and sealing and two mounting portions, one three are fixed together by rivet.The utility model has the advantages that easy to assembly.
Description
Technical field
The utility model belongs to auto parts and components field, is related to a kind of tension device, especially a kind of expansion tightening wheel of tension device.
Background technology
Tension device acts on the Timing Belt or timing chain of engine, plays guiding and tensioner to it, makes it
Always it is in best tensioner state.Be generally divided into oil pressure and mechanical two ways, they can automatically to Timing Belt and
Timing chain carries out the adjusting of tensioner degree.
A kind of existing mechanical tension device automobile engine belt auto-tensioning wheel assembly as disclosed in Chinese patent library
【Application number：201320656647.0；Authorization Notice No.：CN 203570950 U】, including frames, the frames
A central shaft and two oilless bearings are equipped in centre bore, the central shaft both ends are respectively provided with a plain cushion and are connected；The support
Rack one end is equipped with the driving wheel made of plastic wraps housing washer, and the driving wheel is installed using fastening screw
In frames, top is equipped with a plastic dust lid；The frames other end is equipped with a damper, and the damper passes through
Fastening screw is connected in frames.
When actual installation, driving wheel is connected by way of tight fit with bearing outer ring, and this mounting means is not only to passing
The precision of driving wheel and bearing requires, and is also required to assembly orientation and dynamics, causes entire assembling process more numerous
It is trivial.
Utility model content
The purpose of this utility model is the presence of the above problem in view of the prior art, it is proposed that a kind of tensioner of tension device
The technical issues of wheel, solution is how to improve property easy to assembly.
The purpose of this utility model can be realized by following technical proposal：The expansion tightening wheel of tension device, tension device include upper
Arm, the upper end side of upper arm has interconnecting piece in a ring, and interconnecting piece is horizontally disposed, this expansion tightening wheel includes being mounted on
Bearing on interconnecting piece, which is characterized in that the bearing outside has a cylindrical shell, shell there are two and along bearing
Center symmetric setting all has the annular flange of protrusion on the inside of two above-mentioned shells, and annular flange is sleeved on outside bearing, described
Section of the annular flange in bearing axial direction it is L-shaped, and annular flange is by the mounting portion one that is vertically arranged and horizontally disposed
Mounting portion two forms, and mounting portion one and mounting portion two annularly and are sleeved on outside bearing, and the mounting portion one described in two sticks on
Together, the inside of two above-mentioned mounting portions two all has the positioning region annularly protruded, and two positioning regions are outer with bearing respectively
The both ends of the surface tight abutment of circle；Dustproof cover is equipped in this shell far from upper arm, and dustproof cover is sleeved on the mounting portion two
Outside, there is the sealing annularly protruded, sealing and dustproof cover coaxial arrangement, and sealing on one end lateral wall of dustproof cover
It is pressed on mounting portion one, the other end of dustproof cover is in closed, and the sealing and two mounting portions, one three pass through rivet
It is fixed together, rivet is at least evenly distributed with there are two and along the circumferential direction of bearing.
When installation, it is only necessary to by dustproof cover and two casings in Bearing outer, and dustproof cover and two shell threes pass through it is same
A piece rivet positions simultaneously, can effectively reduce installation steps in this way and reduce installation difficulty, to effectively improve assembling
Convenience.
In the expansion tightening wheel of above-mentioned tension device, above-mentioned dustproof cover is by lid and the cylinder group being sleeved on outside mounting portion two
At above-mentioned sealing is set on one end of cylinder, and above-mentioned lid is sleeved on outside the other end of cylinder, and lid is mutually solid with cylinder
Even, and lid is by the port closed of the other end of cylinder.Dustproof cover uses split structure, has the advantages that easy to process.
In the expansion tightening wheel of above-mentioned tension device, the lid and cylinder are made of plastic material, the cylinder
Lateral wall on offer annular slot, there is annular buckle, the annular buckle and ring on the madial wall of the lid
Shape card slot matches, and annular snap buckle is connected in annular slot.
In the expansion tightening wheel of above-mentioned tension device, the upper arm offers threaded hole along axially penetrating through for bearing, screw thread
Hole and the inner cavity face of interconnecting piece are simultaneously connected to, and screw, and the both ends of the surface difference of the inner ring of bearing are bolted in the threaded hole
It offsets with the head of screw and upper arm.Under the cooperation of screw and threaded hole, effective axial limiting is carried out to bearing, to prevent
Axial float occurs for expansion tightening wheel, to improve the stability of tension device work.
In the expansion tightening wheel of above-mentioned tension device, the mounting portion one described in the sealing and two is respectively along the axis of bearing
To through offering connecting hole one, connecting hole two and connecting hole three, connecting hole one, connecting hole two, connecting hole three and rivet
Quantity is identical and position face one by one, connecting hole one, connecting hole two and the composition of connecting hole three one and rivet phase of position face
Matched mounting hole, and the bar portion of rivet is in mounting hole.Using above-mentioned design, have simple in structure, easy to assembly
Advantage.
Compared with prior art, the expansion tightening wheel of this tension device has the following advantages：
When 1, installing, it is only necessary to which by dustproof cover and two casings in Bearing outer, and dustproof cover and two shell threes pass through
Same root rivet positions simultaneously, can effectively reduce installation steps in this way and reduce installation difficulty, to effectively improve assembling
Convenience.
2, under the cooperation of screw and threaded hole, effective axial limiting is carried out to bearing, to prevent expansion tightening wheel from axis occurs
To play, to improve the stability of tension device work.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of tension device.
Fig. 2 is the enlarged structure schematic diagram at A in Fig. 1.
Fig. 3 is the right side structural representation of tension device.
In figure, 1, upper arm；1a, interconnecting piece；1b, threaded hole；2, bearing；3, shell；3a, annular flange；3a1, mounting portion
One；3a2, mounting portion two；3b, positioning region；4, dustproof cover；4a, lid；4a1, annular buckle；4b, cylinder；4b1, sealing；5、
Rivet；6, screw.
Specific implementation mode
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, tension device includes upper arm 1 in a strip shape, the upper end side of upper arm 1 has interconnecting piece in a ring
1a, interconnecting piece 1a and upper arm 1 are an integral structure, and interconnecting piece 1a is horizontally disposed.Axial direction of the upper arm 1 along interconnecting piece 1a
Through threaded hole 1b is offered, threaded hole 1b and the inner cavity of interconnecting piece 1a face, and the inner cavity of threaded hole 1b and interconnecting piece 1a
Connection.
As shown in Figure 1 to Figure 3, this expansion tightening wheel is made of bearing 2, shell 3, dustproof cover 4, rivet 5 etc..
Wherein, bearing 2 is sleeved on outside interconnecting piece 1a, and the inner ring of bearing 2 by way of interference fit with interconnecting piece 1a phases
It is connected.It further illustrates, is bolted with screw 6 in threaded hole 1b, and the both ends of the surface of the inner ring of bearing 2 head with screw 6 respectively
It offsets with upper arm 1, to carry out axial limiting to bearing 2.
Shell 3 is cylindrical in shape and is set in outside bearing 2.Shell 3 there are two and along the center symmetric setting of bearing 2.Such as Fig. 1 and
Shown in Fig. 2, the annular flange 3a of protrusion is all had on the madial wall of two shells 3, annular flange 3a and shell 3 are integral type knot
Structure, and two annular flange 3a are sleeved on outside bearing 2.Sections of the annular flange 3a in 2 axial direction of bearing is L-shaped, annular flange 3a
It is made of one 3a1 of mounting portion and two 3a2 of horizontally disposed mounting portion that are vertically arranged, mounting portion one 3a1 and two 3a2 of mounting portion is equal
It is sleeved on annularly and outside bearing 2.Wherein, two mounting portions, one 3a1 is sticked together；The madial wall of two mounting portions, two 3a2 with
The lateral wall of the outer ring of bearing 2 mutually reclines.The positioning region 3b annularly protruded is all had on the inside of two mounting portions, two 3a2, is positioned
Portion 3b and annular flange 3a are an integral structure, and two positioning region 3b respectively with the both ends of the surface tight abutment of the outer ring of bearing 2.
As shown in Figure 1 to Figure 3, dustproof cover 4 is disposed far from inside this shell 3 of upper arm 1, and at this point, dustproof cover 4 is arranged
Outside two 3a2 of corresponding mounting portion.There is the sealing 4b1 annularly protruded, sealing on one end lateral wall of dustproof cover 4
4b1 and dustproof cover 4 are coaxially disposed, and sealing 4b1 is pressed on one 3a1 of corresponding mounting portion.The other end of dustproof cover 4 is in envelope
Close shape.Sealing 4b1 and two mounting portions, one 3a1 three are fixed together by rivet 5, rivet 5 at least there are two and along bearing 2
Circumferential direction it is uniformly distributed.Specifically, sealing 4b1 and two mounting portions, one 3a1 offer connecting hole along axially penetrating through for bearing 2 respectively
One, connecting hole two and connecting hole three, connecting hole one, connecting hole two, connecting hole three be identical with the quantity of rivet 5 four and position one
One face, connecting hole one, connecting hole two and the connecting hole three of position face form a mounting hole to match with rivet 5, and riveting
The bar portion of nail 5 is in mounting hole.
It further illustrates, as depicted in figs. 1 and 2, dustproof cover 4 is by lid 4a and the cylinder 4b being sleeved on outside two 3a2 of mounting portion
Composition.Wherein, sealing 4b1 is on one end of cylinder 4b；Lid 4a is sleeved on outside the other end of cylinder 4b, lid 4a and cylinder
4b is fixedly connected with, and lid 4a is by the port closed of the other end of cylinder 4b.In the present embodiment, the connection of lid 4a and cylinder 4b
Mode is as follows：Lid 4a and cylinder 4b are made of plastic material, and annular slot, lid 4a are offered on the lateral wall of cylinder 4b
Madial wall on have annular buckle 4a1, annular buckle 4a1 match with annular slot, and annular buckle 4a1 be connected to annular
In card slot.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (5)
1. the expansion tightening wheel of tension device, tension device includes upper arm (1), and the upper end side of upper arm (1) has interconnecting piece in a ring
(1a), and interconnecting piece (1a) is horizontally disposed, this expansion tightening wheel includes the bearing (2) being mounted on interconnecting piece (1a), special
Sign is, is cased with cylindrical shell (3) outside the bearing (2), shell (3) there are two and along the center pair of bearing (2)
Claim setting, the annular flange (3a) of protrusion is all had on the inside of two above-mentioned shells (3), and annular flange (3a) is sleeved on bearing
(2) outside, section of the annular flange (3a) in bearing (2) axial direction is L-shaped, and annular flange (3a) is by what is be vertically arranged
Mounting portion one (3a1) and horizontally disposed mounting portion two (3a2) composition, mounting portion one (3a1) and mounting portion two (3a2) are in ring
Shape and be sleeved on bearing (2) outside, the mounting portion one (3a1) described in two sticks together, two above-mentioned mounting portions two (3a2) it is interior
Side all has the positioning region (3b) annularly protruded, and two positioning regions (3b) is close with the both ends of the surface of the outer ring of bearing (2) respectively
Against；Dustproof cover (4) is equipped in this shell (3) far from upper arm (1), and dustproof cover (4) is sleeved on the mounting portion two
(3a2) outside, has the sealing (4b1) that annularly protrudes on one end lateral wall of dustproof cover (4), sealing (4b1) and dust-proof
(4) coaxial arrangement is covered, and sealing (4b1) is pressed on mounting portion one (3a1), the other end of dustproof cover (4) is in closed, institute
The sealing (4b1) and two mounting portions, one (3a1) three stated are fixed together by rivet (5), rivet (5) at least there are two and
Circumferential direction along bearing (2) is uniformly distributed.
2. the expansion tightening wheel of tension device according to claim 1, which is characterized in that above-mentioned dustproof cover (4) is by lid (4a)
It being formed with the cylinder (4b) of mounting portion two (3a2) outside is sleeved on, above-mentioned sealing (4b1) is set on one end of cylinder (4b), on
The lid (4a) stated is sleeved on outside the other end of cylinder (4b), and lid (4a) and cylinder (4b) are fixedly connected with, and lid (4a) is by cylinder
The port closed of the other end of (4b).
3. the expansion tightening wheel of tension device according to claim 2, which is characterized in that the lid (4a) and cylinder (4b) is equal
It is made of plastic material, annular slot, the madial wall of the lid (4a) is offered on the lateral wall of the cylinder (4b)
Upper to have annular buckle (4a1), the annular buckle (4a1) matches with annular slot, and annular buckle (4a1) is connected to
In annular slot.
4. the expansion tightening wheel of tension device according to claim 1, which is characterized in that axis of the upper arm (1) along bearing (2)
To through offering threaded hole (1b), threaded hole (1b) and the inner cavity face of interconnecting piece (1a) are simultaneously connected to, the threaded hole
It is bolted with screw (6) in (1b), and the both ends of the surface of the inner ring of bearing (2) offset with the head of screw (6) and upper arm (1) respectively.
5. the expansion tightening wheel of tension device according to claim 1, which is characterized in that the sealing (4b1) and described in two
Mounting portion one (3a1) offer connecting hole one, connecting hole two and connecting hole three along axially penetrating through for bearing (2) respectively, connect
Kong Yi, connecting hole two, connecting hole three be identical with the quantity of rivet (5) four and position face one by one, the connecting hole of position face
One, the mounting hole that connecting hole two and the composition of connecting hole three one match with rivet (5), and the bar portion of rivet (5) is embedded in mounting hole
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820159350.6U CN207830484U (en) | 2018-01-30 | 2018-01-30 | The expansion tightening wheel of tension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820159350.6U CN207830484U (en) | 2018-01-30 | 2018-01-30 | The expansion tightening wheel of tension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207830484U true CN207830484U (en) | 2018-09-07 |
Family
ID=63395731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820159350.6U Active CN207830484U (en) | 2018-01-30 | 2018-01-30 | The expansion tightening wheel of tension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207830484U (en) |
-
2018
- 2018-01-30 CN CN201820159350.6U patent/CN207830484U/en active Active
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