CN209278444U - A kind of idle pulley - Google Patents
A kind of idle pulley Download PDFInfo
- Publication number
- CN209278444U CN209278444U CN201821441412.9U CN201821441412U CN209278444U CN 209278444 U CN209278444 U CN 209278444U CN 201821441412 U CN201821441412 U CN 201821441412U CN 209278444 U CN209278444 U CN 209278444U
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- CN
- China
- Prior art keywords
- idle pulley
- bearing
- dustproof cover
- hole
- end surface
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Abstract
The utility model discloses a kind of idle pulleys, including a belt wheel and the bearing being rotationally connected in belt wheel, bearing upper surface is equipped with for preventing dust from entering the first dustproof cover of bearing, first dustproof cover lower end surface center is equipped with the first protrusion of insertion bearing centre, bearing lower end surface is equipped with for preventing dust from entering the second dustproof cover of bearing, and second dustproof cover center be equipped with connection bearing central through hole first through hole, second dustproof cover lower end surface slidably connects a bindiny mechanism for passing through first through hole with the first raised lateral wall interference fit, the idle pulley structure of this kind of structure is simple, cost is relatively low, and dust-proof effect is preferable.
Description
Technical field
The utility model relates to idle pulley technical field more particularly to a kind of idle pulleys.
Background technique
Engine idle pulley is generally used for increasing transmission belt cornerite and improves the efficiency and reliability of V belt translation, therefore idle pulley quilt
It is required that having good sealing performance, greasy property, corrosion-resistant property and longer service life；Generally pass through card in the prior art
It the forms such as connects and removes the fixed dustproof cover structure being located in idle pulley both ends of the surface, and be clamped the idle pulley that form is composed, through too long
After way is transported, each part of idle pulley is easy to scatter, to occur going out stock when client examines goods and deliver the feelings such as drawing difference
Condition, to influence the ware-house-in inspection and installation of client.
Summary of the invention
Technical problem to be solved by the utility model is to provide a kind of structure is simple, cost is relatively low, turns to produce with convenient
Product are less prone to the idle pulley for phenomena such as loosening.
The technical scheme in the invention for solving the above technical problem are as follows: a kind of idle pulley, including a belt wheel and rotation connect
The bearing being connected in belt wheel, bearing upper surface is equipped with for preventing dust from entering the first dustproof cover of bearing, under the first dustproof cover
End face center is equipped with the first protrusion of insertion bearing centre, and bearing lower end surface is equipped with prevents for preventing dust from entering the second of bearing
Dirt lid, and the second dustproof cover center is equipped with the first through hole of connection bearing central through hole, the second dustproof cover lower end surface is slidably connected
There is a bindiny mechanism for passing through first through hole with the first raised lateral wall interference fit.
After using the above structure, the utility model has the advantage that with existing structure comparison
A kind of idle pulley of the utility model can be effectively prevented dust in the respectively arranged dustproof cover of idle pulley both ends of the surface and enter
Inside idle pulley, traditional dust cover is fixedly connected in idle pulley both ends of the surface by way of clamping, and the form being clamped certainly exists
It is used for the groove of fitting projection portion card sum positioned at the lug boss of component and on another component, this kind of type of attachment
Production cost is higher, and this kind of connection type firmness of the connection be not high, is easy to happen phenomena such as component is loose during transportation,
And this kind of connection type makes the service life of the product will not be very high, usually occurs that a period of time has been used to occur as soon as component
Phenomena such as corrupted；And the first dustproof cover and the second dustproof cover are fixed on bearing by interference fit by a link block by this product
Both ends of the surface on, so that playing prevents dust from entering the effect inside idle pulley, and the connection type group being interference fitted loads
It is next very convenient, even if there is in transit the group again of phenomena such as product loosening staff's opposite side idle pulley in entire idle pulley
Dress is also very convenient, and the baffle that the second dustproof cover lateral wall is circumferentially arranged also has further prevented side of the dust from dustproof cover
Into inside idle pulley, better dust-proof effect is played.
Interference fit in the application makes to generate elasticity pressure between piece surface after assembly i.e. by the shrink value of axis and hole
Power, to obtain the connection of fastening.Interference fit is exactly the connection realized using the interference fit of two connected pieces itself,
It can be made into releasable connection according to the size of magnitude of interference, may be alternatively configured non-disconnectable connection.Mating surface is usually cylindrical surface, is also sometimes
Circular conical surface；After assembly, the radial deformation of external member and internal member makes to generate very big pressure between mating surface.When work, by pressure
The frictional force that clamp force generates transmits load.
As a kind of preferred: bindiny mechanism is the link block of " convex " word structure, positioned at the outer diameter of link block upper end convex block
Just identical as first through hole internal diameter, bearing inner via hole internal diameter, link block upper surface is equipped with one for the first of the first protrusion insertion
Groove, the link block center are equipped with the second through-hole for facilitating idle pulley to install；Link block is designed as "convex" shaped can be effective
Plug the link block in bearing centre through-hole, the upper surface of link block upper end convex block is equipped with first for the first protrusion insertion
Groove, after first protrusion the first groove of insertion, the inner sidewall of the first groove is sufficiently bonded with the lateral wall of the first protrusion, is connected
The lateral wall of block upper end convex block is sufficiently bonded with the inner sidewall of bearing centre through-hole, thus by the first dustproof cover and the second dustproof cover
Be fixedly connected in idle pulley both ends of the surface.
As it is a kind of preferably: the first raised lower end surface center is equipped with the second through-hole of connection and identical with the second through-hole internal diameter
Third through-hole；The internal diameter of third through-hole is identical as the second through-hole internal diameter, facilitates entire idle pulley installation and in-engine idle pulley
On bracket.
As a kind of preferred: the second dustproof cover lateral wall, which is circumferentially with, enters idle pulley from dust cover side for placing dust
Internal baffle；On the one hand the setting of baffle ensure that the second dustproof cover can be stablized on installation and idle pulley lower end surface, another party
Face prevents dust to enter inside idle pulley from the second dustproof cover side, it is more preferable play it is dust-proof and other effects.
As a kind of preferred: idle pulley lower end surface is equipped with the second groove for being embedded in and fixing for baffle；The setting of second groove
It is more preferable that the second dustproof cover is prevented to fall off from idle pulley lower end surface, play the role of fixing the second dustproof cover.
Detailed description of the invention
Fig. 1 is a kind of cross-sectional view of idle pulley of the utility model.
Fig. 2 is a kind of exploded view of idle pulley of the utility model.
Fig. 3 is the structural schematic diagram at the top of a kind of idle pulley of the utility model.
Fig. 4 is a kind of structural schematic diagram of idle pulley bottom of the utility model.
In figure, 1, idle pulley, 2, bearing, the 3, first dustproof cover, the 4, second dustproof cover, 5, bindiny mechanism, the 101, second groove,
301, the first protrusion, 302, third through-hole, 401, first through hole, 402, baffle, 501, convex block, the 502, second through-hole.
Specific embodiment
It explains with reference to the accompanying drawing to a kind of specific embodiment of the utility model.
Embodiment 1: referring to Fig. 1, Fig. 2, applicant passes through the company of interference fit in the connection type of dustproof cover on idle pulley
The mode of connecing replaces the connection type of traditional clamping form；Idle pulley in the application is divided into 5 parts, respectively idle pulley ontology,
It is anti-to be rotationally connected with the intrinsic bearing of idle pulley, the dustproof cover for being respectively arranged on bearing upper and lower end face and a connection bearing upper and lower end face
Dirt lid and the bindiny mechanism for being fixed in bearing upper and lower end face.The specific steps of the product are installed are as follows: be placed in bearing lazy
After taking turns in the through-hole of body central, it is embedded in the second dustproof cover in the lower end of idle pulley, the second dustproof cover lateral wall is circumferentially arranged at this time
Baffle can be embedded in the second groove of idle pulley lower end surface so that the second dustproof cover and the second groove close-fitting, exist at this time
The first dustproof cover is placed on the upper surface of bearing, makes the through-hole of the first protrusion insertion bearing centre of the first dustproof cover lower end surface
Interior, the lateral wall of the first protrusion and the inner sidewall of bearing centre through-hole are that fit-state, i.e., the first raised outer diameter are not less than at this time
Strength in bearing centre through-hole passes through first through hole and is inserted into a bindiny mechanism, the bindiny mechanism at this time in the lower end of the second dustproof cover
For "convex" shaped, which is equipped with the first groove for the first protrusion insertion, and the first groove is set
Surely bindiny mechanism is facilitated when continuing to slide up across first through hole, and the first protrusion can be embedded in first under the action of thrust
In groove, while the convex block of bindiny mechanism upper end can be also embedded between the first raised lateral wall and bearing centre inner side wall of through hole
Interference fit is formed in space, so that the first dustproof cover and the second dustproof cover are fixedly connected on the upper and lower end face of bearing.
Referring to Fig. 1, the technical scheme in the invention for solving the above technical problem are as follows: a kind of idle pulley, including an idle pulley 1
And it is rotationally connected with the bearing 2 at 1 center of idle pulley, 2 upper surface of bearing is equipped with for preventing dust from entering the first dustproof cover of bearing 2
3,3 lower end surface center of the first dustproof cover is equipped with first protrusion 301 at insertion 2 center of bearing, and 2 lower end surface of bearing is equipped with for preventing
Dust enters the second dustproof cover 4 of bearing 2, and 4 center of the second dustproof cover is equipped with the first through hole of connection 2 central through hole of bearing
401,4 lower end surface of the second dustproof cover slidably connects one and passes through what first through hole 401 was interference fitted with the first raised 301 lateral walls
Bindiny mechanism 5.
After using the above structure, the utility model has the advantage that with existing structure comparison
A kind of idle pulley of the utility model can be effectively prevented dust in the respectively arranged dustproof cover of idle pulley both ends of the surface and enter
Inside idle pulley, traditional dust cover is fixedly connected in idle pulley both ends of the surface by way of clamping, and the form being clamped certainly exists
It is used for the groove of fitting projection portion card sum positioned at the lug boss of component and on another component, this kind of type of attachment
Production cost is higher, and this kind of connection type firmness of the connection be not high, is easy to happen phenomena such as component is loose during transportation,
And this kind of connection type makes the service life of the product will not be very high, usually occurs that a period of time has been used to occur as soon as component
Phenomena such as corrupted；And the first dustproof cover and the second dustproof cover are fixed on bearing by interference fit by a link block by this product
Both ends of the surface on, so that playing prevents dust from entering the effect inside idle pulley, and the connection type group being interference fitted loads
It is next very convenient, even if there is in transit the group again of phenomena such as product loosening staff's opposite side idle pulley in entire idle pulley
It fills also very convenient.
Interference fit in the application makes to generate elasticity pressure between piece surface after assembly i.e. by the shrink value of axis and hole
Power, to obtain the connection of fastening.Interference fit is exactly the connection realized using the interference fit of two connected pieces itself,
It can be made into releasable connection according to the size of magnitude of interference, may be alternatively configured non-disconnectable connection.Mating surface is usually cylindrical surface, is also sometimes
Circular conical surface.After assembly, the radial deformation of external member and internal member makes to generate very big pressure between mating surface.When work, by pressure
The frictional force that clamp force generates transmits load；Wherein interference.
As a kind of preferred: bindiny mechanism 5 is the link block of " convex " word structure, positioned at 5 upper end convex block 501 of link block
Outer diameter is just identical as 401 internal diameter of first through hole, 2 central through hole internal diameter of bearing, and 5 upper surface of link block is equipped with one for the first protrusion
First groove 501 of 301 insertions, 5 center of link block are equipped with the second through-hole 502 for facilitating idle pulley 1 to install；Link block is designed as
"convex" shaped can effectively be such that the link block plugs in bearing centre through-hole, and the upper surface of link block upper end convex block is equipped with for the
One protrusion insertion the first groove, when first protrusion insertion the first groove after, the inner sidewall of the first groove with first protrusion outside
Side wall is sufficiently bonded, and the lateral wall of link block upper end convex block is sufficiently bonded with the inner sidewall of bearing centre through-hole, thus by first
Dustproof cover and the second dustproof cover be fixedly connected in idle pulley both ends of the surface.
As it is a kind of preferably: the first raised 301 lower end surface centers be equipped with the second through-hole 502 of connection and with the second through-hole 502
The identical third through-hole 302 of internal diameter；The internal diameter of third through-hole is identical as the second through-hole internal diameter, facilitates entire idle pulley installation and hair
On idler support in motivation.
As it is a kind of preferably: 4 lateral wall of the second dustproof cover be circumferentially with for place dust from second it is anti-at 4 side of lid into
Enter the baffle 402 inside idle pulley 1；On the one hand the setting of baffle ensure that the second dustproof cover can stablize installation and idle pulley lower end surface
On, on the other hand prevent dust to enter inside idle pulley from the second dustproof cover side, it is more preferable play it is dust-proof and other effects.
As a kind of preferred: 1 lower end surface of idle pulley is equipped with the second groove 101 for being embedded in and fixing for baffle 402；Second groove
Setting it is more preferable that the second dustproof cover is prevented to fall off from idle pulley lower end surface, play the role of fixing the second dustproof cover.
Claims (5)
1. a kind of idle pulley, including an idle pulley (1) and it is rotationally connected with the bearing (2) at idle pulley (1) center, it is characterised in that: described
Bearing (2) upper surface is equipped with for preventing dust from entering the first dustproof cover (3) of bearing (2), the first dustproof cover (3) lower end
Face center is equipped with first raised (301) at insertion bearing (2) center, bearing (2) lower end surface be equipped with for prevent dust into
Enter the second dustproof cover (4) of bearing (2), and the second dustproof cover (4) center is equipped with the first of connection bearing (2) central through hole
Through-hole (401), the second dustproof cover (4) lower end surface slidably connect one and pass through first through hole (401) and first raised (301)
The bindiny mechanism (5) of lateral wall interference fit.
2. a kind of idle pulley according to claim 1, it is characterised in that: the bindiny mechanism (5) is " convex " word structure
Link block, link block (5) upper surface are equipped with first groove (501) being embedded in for first raised (301), the link block
(5) center is equipped with the second through-hole (502) for facilitating idle pulley (1) to install.
3. a kind of idle pulley according to claim 2, it is characterised in that: described first raised (301) lower end surface center is equipped with
It is connected to the second through-hole (502) and third through-hole identical with the second through-hole (502) internal diameter (302).
4. a kind of idle pulley according to claim 1, it is characterised in that: the second dustproof cover (4) lateral wall is circumferentially with
Enter the internal baffle (402) of idle pulley (1) from the second dustproof cover (4) side for placing dust.
5. a kind of idle pulley according to claim 1, it is characterised in that: idle pulley (1) lower end surface is equipped with for baffle (402)
The second groove (101) for being embedded in and fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821441412.9U CN209278444U (en) | 2018-09-04 | 2018-09-04 | A kind of idle pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821441412.9U CN209278444U (en) | 2018-09-04 | 2018-09-04 | A kind of idle pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209278444U true CN209278444U (en) | 2019-08-20 |
Family
ID=67603066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821441412.9U Active CN209278444U (en) | 2018-09-04 | 2018-09-04 | A kind of idle pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209278444U (en) |
-
2018
- 2018-09-04 CN CN201821441412.9U patent/CN209278444U/en active Active
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| GR01 | Patent grant |