CN214698944U

CN214698944U - Guide head and shock absorber

Info

Publication number: CN214698944U
Application number: CN202120992392.XU
Authority: CN
Inventors: 王洪江
Original assignee: Tianjin Anshunda Auto Parts Co ltd
Current assignee: Tianjin Anshunda Auto Parts Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-11-12
Anticipated expiration: 2031-05-10

Abstract

The utility model discloses a direction head and bumper shock absorber, direction head include the direction head body, and the direction head body is equipped with along its axial link up the setting, is used for supplying the first through-hole that the piston rod passed, sets up on the periphery wall of direction head body, is used for holding the first recess of hydraulic oil, is linked together with first recess, is used for supplying the first oil duct of hydraulic oil inflow in the first recess to and be used for the second oil duct of the first recess of intercommunication and first through-hole. So set up, the piston rod passes first through-hole to make the direction head suit outside the piston rod, hydraulic oil flows in first recess through first oil duct, again by the second oil duct flow in first through-hole, make the direction head inside and outside form the oil circuit passageway, when the piston rod is at the direction head high-frequency motion, the hydraulic oil that flows in the above-mentioned oil circuit passageway can take away the heat that the friction produced, realize the radiating effect, further improve the radiating effect of direction head, reduce the influence to fluid viscosity, avoid the oil leak condition, guarantee the reliable work of bumper shock absorber.

Description

Guide head and shock absorber

Technical Field

The utility model relates to a bumper shock absorber technical field, more specifically say, relate to a direction head and bumper shock absorber.

Background

In the prior art, a shock absorber is used for inhibiting the shock when a spring absorbs the shock and rebounds and the impact from the road surface. The shock absorber is widely applied to motor vehicles and is an appliance for accelerating the attenuation of the vibration of a vehicle frame and a vehicle body so as to improve the driving smoothness of the motor vehicles.

Generally, the shock absorber includes a cylinder, a piston head, a piston rod, a guide head, a cover plate, and the like. The upper end of the piston rod is arranged in the piston head, the guide head is sleeved at the lower end of the piston rod, then the piston rod is inserted into the cylinder barrel, the guide head is fixedly connected with the inner wall of the cylinder barrel and keeps still, and then the cover plate is arranged at one end of the cylinder barrel close to the guide head. The piston rod moves up and down in the cylinder barrel to push hydraulic oil in the cylinder barrel to pass through the pressure buffering device, so that the hydraulic oil has a damping effect under certain pressure.

During operation, the piston rod continuously moves up and down in the guide head to generate heat through friction, and the piston rod generates a large amount of heat through high movement frequency. However, the applicant has found that at least the following problems exist: the existing guide head is not ideal in heat dissipation effect, and generated heat cannot be dissipated outwards from the position of the guide head in time, so that the viscosity of hydraulic oil in a cylinder barrel is reduced, the oil leakage condition of the shock absorber occurs, and the shock absorber is prone to failure.

Therefore, how to solve the problems that in the prior art, a large amount of heat is generated by high-frequency friction between a piston rod and a guide head, the heat dissipation effect of the guide head is poor, the heat cannot be dissipated outwards in time, the viscosity of hydraulic oil in a cylinder barrel is reduced, the oil leakage condition of a shock absorber occurs, and the service life of the shock absorber is influenced, and the technical problem is important to solve by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a direction head and bumper shock absorber to solve among the prior art piston rod and direction head high frequency friction and produce a large amount of heats, and direction head radiating effect is poor, leads to the heat can not in time outwards spill, and the hydraulic oil viscosity in the cylinder reduces, and the oil leak condition appears in the bumper shock absorber, influences bumper shock absorber life's problem.

The utility model aims at realizing through the following technical scheme:

the utility model provides a pair of direction head, including the direction head body, the direction head body is equipped with the edge the first through-hole that sets up, be used for supplying the piston rod to pass is link up to the axial of direction head body, sets up on the periphery wall of direction head body, be used for holding the first recess of hydraulic oil, with first recess is linked together, is used for supplying hydraulic oil inflow first oil duct in the first recess, and is used for the intercommunication first recess with the second oil duct of first through-hole.

Preferably, the first groove is an annular groove arranged along the circumferential direction of the guide head body, the number of the first oil passages is at least two, and the first oil passages are distributed at intervals along the circumferential direction of the guide head body.

Preferably, the number of the second oil passages is at least two, and each of the second oil passages is distributed at intervals along the circumferential direction of the guide head body.

Preferably, one end of the second oil duct, which is communicated with the first groove, is a first opening, one end of the second oil duct, which is communicated with the first through hole, is a second opening, the second oil duct is arranged in an inclined manner, and the height of the first opening is higher than that of the second opening.

Preferably, the outer peripheral wall of the guide head body is further provided with a second groove for mounting a sealing member.

Preferably, the hole wall of the first through hole is provided with a third groove for installing a sealing element, and the second opening is located above the third groove.

Preferably, the number of the third grooves is at least two, and each third groove is arranged at intervals along the axial direction of the guide head body.

Preferably, one end of the guide head body is further provided with a threaded section for connecting a cover plate.

The utility model also provides a bumper shock absorber, locate including piston rod and cover the outer direction head of piston rod, the direction head be as above arbitrary the direction head.

The utility model provides an among the technical scheme, a direction head includes direction head body, and direction head body is equipped with along the axial of direction head body link up the setting, is used for supplying the first through-hole that the piston rod passed, sets up on the periphery wall of direction head body, is used for holding the first recess of hydraulic oil, is linked together with first recess, is used for supplying the first oil duct of hydraulic oil inflow in the first recess to and be used for the second oil duct of the first recess of intercommunication and first through-hole. According to the arrangement, the piston rod penetrates through the first through hole, so that the guide head is sleeved outside the piston rod, hydraulic oil flows into the first groove through the first oil duct and then flows into the first through hole through the second oil duct, an oil path passage is formed inside and outside the guide head, when the piston rod moves in the guide head at a high frequency, the hydraulic oil flowing in the oil path passage can take away heat generated by friction, the heat dissipation effect is realized, the heat dissipation effect of the guide head is further improved, the influence on the viscosity of the oil is reduced, the oil leakage condition is avoided, the reliable work of the shock absorber is guaranteed, and the problems that in the prior art, the high-frequency friction between the piston rod and the guide head generates a large amount of heat, the heat cannot be dissipated outwards in time, the viscosity of the hydraulic oil in the cylinder is reduced, the oil leakage condition of the shock absorber occurs, and the service life of the shock absorber is influenced are solved.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a first perspective view of a guide head in an embodiment of the present invention;

FIG. 2 is a second perspective view of a guide head in an embodiment of the present invention;

fig. 3 is a third perspective view of a guide head in an embodiment of the present invention;

FIG. 4 is a front view of a guide head in an embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

fig. 6 is a left side view of the guide head in the embodiment of the present invention;

FIG. 7 is a right side view of a guide head in an embodiment of the present invention;

FIG. 8 is a top view of a guide head in an embodiment of the present invention;

fig. 9 is a bottom view of the guide head in the embodiment of the present invention.

In fig. 1-9:

1. a first through hole; 2. a first groove; 3. a first oil passage; 4. a second oil passage; 5. a first opening; 6. a second opening; 7. a second groove; 8. a third groove; 9. a threaded segment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1-9, the guide head provided in this embodiment includes a guide head body, the guide head body is provided with a first through hole 1 disposed through the guide head body in an axial direction for a piston rod to pass through, a first groove 2 disposed on an outer peripheral wall of the guide head body for accommodating hydraulic oil, a first oil passage 3 communicated with the first groove 2 for allowing the hydraulic oil to flow into the first groove 2, and a second oil passage 4 for communicating the first groove 2 with the first through hole 1. As shown in fig. 1, a first through hole 1 in the guide head body is matched with a piston rod, and the piston rod moves in an axial direction in a reciprocating manner. The outside of the guide head body is matched with the cylinder barrel and fixedly arranged in the cylinder barrel to be kept still. In the arrangement position of the guide head shown in fig. 5, the left-right direction in the drawing is the axial direction of the guide head body. According to the arrangement, the piston rod penetrates through the first through hole, so that the guide head is sleeved outside the piston rod, hydraulic oil flows into the first groove through the first oil duct and then flows into the first through hole through the second oil duct, an oil path passage is formed inside and outside the guide head, when the piston rod moves in the guide head at a high frequency, the hydraulic oil flowing in the oil path passage can take away heat generated by friction, the heat dissipation effect is achieved, the heat dissipation effect of the guide head is further improved, the influence on the viscosity of the oil is reduced, the oil leakage condition is avoided, the reliable work of the shock absorber is guaranteed, and the problems that in the prior art, the heat dissipation effect of the guide head is poor, the heat cannot be dissipated outwards in time, the viscosity of the hydraulic oil in the cylinder is reduced, the oil leakage condition of the shock absorber occurs, and the service life of the shock absorber is influenced are solved.

As shown in fig. 2, the first groove 2 is an annular groove arranged along the circumferential direction of the guide head body, the number of the first oil passages 3 is at least two, and the first oil passages 3 are distributed at intervals along the circumferential direction of the guide head body. Specifically, as shown in fig. 4, the first oil passages 3 are four and evenly distributed. Set up like this, fluid can be followed a plurality of passageways business turn over first recess simultaneously for the fluid circulation, and can encircle after oil gets into first recess and distribute around the direction head, all have the contact with direction head circumference, can carry out the heat exchange better more fully.

In order to make the oil flow into the first through hole 1 relatively quickly, in the embodiment of the present invention, the number of the second oil passages 4 is at least two, and each of the second oil passages 4 is distributed at intervals along the circumferential direction of the guide head body. Alternatively, as shown in fig. 8 and 9, the second oil passage 4 is two and evenly distributed. Design like this, fluid can improve heat exchange efficiency from many places fast flow to first through-hole in.

In the preferred embodiment, as shown in fig. 5, the end of the second oil passage 4 communicating with the first groove 2 is a first opening 5, the end of the second oil passage 4 communicating with the first through hole 1 is a second opening 6, the second oil passage 4 is arranged obliquely, and the height of the first opening 5 is higher than that of the second opening 6, which facilitates the oil to flow from the first groove 2 to the first through hole 1. In the placement position of the guide head shown in fig. 5, the left-right direction in the drawing is the height direction, and the left end is located above and the right end is located below.

As shown in fig. 6 and 7, the outer peripheral wall of the guide head body is further provided with a second groove 7 for mounting a sealing member. The second groove 7 is an annular groove and is matched with the sealing ring, sealing between the guide head and the cylinder barrel can be realized after the sealing ring is arranged, and oil cannot leak out in use.

As shown in fig. 5, a third groove 8 for installing a sealing element is formed in the hole wall of the first through hole 1, the third groove 8 is an annular groove and is matched with the sealing ring, after the sealing ring is installed, sealing between the guide head and the piston rod can be achieved, and the sealing element can be a steckel seal, an O-shaped sealing ring and the like. And the second opening 6 is positioned above the third groove 8, so that the sealing ring in the third groove can be expanded after oil flows into the third groove, the function of holding tightly without oil leakage is achieved, and the sealing effect of the sealing ring is enhanced. In the placement position of the guide head shown in fig. 5, the left-right direction in the drawing is the vertical direction, and the left end in the drawing is the upper end and the right end is the lower end.

In a preferred embodiment of the present invention, there are at least two third grooves 8, and each third groove 8 is arranged at an interval along the axial direction of the guide head body. By the design, multiple sealing is formed in the axial direction, the sealing effect is better, and the use is more reliable.

As shown in fig. 3, one end of the guide head body is further provided with a threaded section 9 for connecting the cover plate. Specifically, this end of body of direction head is equipped with the external screw thread, and the apron is equipped with the screw hole of complex with it, and the two realizes dismantling the connection through the screw thread, and it is convenient to install. In addition, can place the dust ring at the screw hole junction, avoid impurity such as dust to get into.

The embodiment also provides a shock absorber, which comprises a piston rod and a guide head sleeved outside the piston rod, wherein the guide head is as described in any one of the above embodiments. According to the arrangement, the piston rod penetrates through the first through hole, the guide head is sleeved outside the piston rod, hydraulic oil flows into the first groove through the first oil duct and then flows into the first through hole through the second oil duct, an oil path passage is formed inside and outside the guide head, when the piston rod moves in the guide head at a high frequency, the hydraulic oil flowing in the oil path passage can take away heat generated by friction, the heat dissipation effect is achieved, the heat dissipation effect of the guide head is further improved, the influence on the viscosity of the oil is reduced, the oil leakage condition is avoided, the reliable work of the shock absorber is guaranteed, the problem that in the prior art, the heat generated by high-frequency friction of the piston rod and the guide head is poor, the heat cannot be dissipated outwards in time, the viscosity of the hydraulic oil in the cylinder is reduced, the oil leakage condition of the shock absorber occurs, and the service life of the shock absorber is influenced is solved. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the guide head, and therefore, the description is omitted here.

The following description specifically describes the guide head with reference to the above embodiments, in a preferred embodiment of the present embodiment, the guide head includes a guide head body, the guide head body is provided with a first through hole 1 which is arranged to penetrate through the guide head body in the axial direction and through which a piston rod passes, a first groove 2 which is arranged on the outer peripheral wall of the guide head body and is used for accommodating hydraulic oil, a first oil passage 3 which is communicated with the first groove 2 and is used for allowing the hydraulic oil to flow into the first groove 2, and a second oil passage 4 which is used for communicating the first groove 2 with the first through hole 1. In this embodiment, the first grooves 2 are annular grooves arranged along the circumferential direction of the guide head body, the number of the first oil passages 3 is four, and the first oil passages 3 are uniformly distributed at intervals along the circumferential direction of the guide head body. The number of the second oil passages 4 is two, and the second oil passages 4 are uniformly distributed at intervals along the circumferential direction of the guide head body. One end of the second oil duct 4 communicated with the first groove 2 is a first opening 5, one end of the second oil duct 4 communicated with the first through hole 1 is a second opening 6, the second oil duct 4 is obliquely arranged, and the height of the first opening 5 is higher than that of the second opening 6. The peripheral wall of the guide head body is also provided with a second groove 7 for mounting a sealing member so as to realize sealing between the guide head and the cylinder barrel. The pore wall of first through-hole 1 is equipped with the third recess 8 that is used for installing the sealing member to realize leading between head and the piston rod sealed, and second opening 6 is located the top of third recess 8, can rise the sealing washer in the recess after oil enters, plays the effect that tightly holds and can not produce the oil leak, strengthens sealed effect. The number of the third grooves 8 is two, and the third grooves 8 are arranged at intervals along the axial direction of the guide head body to form multi-layer sealing. Wherein, the sealing element can adopt a steckel seal, an O-shaped sealing ring and the like. In addition, one end of the guide head body is also provided with a threaded section 9 for connecting the cover plate, so that the detachable connection with the cover plate is realized.

The embodiment also provides a shock absorber, which comprises a piston rod and a guide head sleeved outside the piston rod, wherein the guide head is as described in the above embodiments.

According to the arrangement, the piston rod penetrates through the first through hole, the guide head is sleeved outside the piston rod, hydraulic oil flows into the first groove through the first oil duct and then flows into the first through hole through the second oil duct, an oil path passage is formed inside and outside the guide head, when the piston rod moves in the guide head at a high frequency, the hydraulic oil flowing in the oil path passage can take away heat generated by friction, the heat dissipation effect is achieved, the heat dissipation effect of the guide head is further improved, the influence on the viscosity of the oil is reduced, the oil leakage condition is avoided, the reliable work of the shock absorber is guaranteed, and the problems that in the prior art, the heat dissipation effect of the guide head is poor, the heat cannot be dissipated outwards in time, the viscosity of the hydraulic oil in the cylinder is reduced, the oil leakage condition of the shock absorber occurs, and the service life of the shock absorber is influenced are solved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The guide head is characterized by comprising a guide head body, wherein the guide head body is provided with a first through hole (1) which is arranged in a penetrating manner along the axial direction of the guide head body and used for a piston rod to penetrate through, a first groove (2) which is arranged on the peripheral wall of the guide head body and used for containing hydraulic oil, a first oil duct (3) which is communicated with the first groove (2) and used for supplying the hydraulic oil to flow into the first groove (2), and a second oil duct (4) which is used for communicating the first groove (2) with the first through hole (1).

2. A guide head according to claim 1, wherein the first groove (2) is an annular groove arranged circumferentially along the guide head body, the number of the first oil passages (3) is at least two, and each of the first oil passages (3) is spaced circumferentially along the guide head body.

3. A guide head according to claim 2, wherein there are at least two of the second oil channels (4), and each of the second oil channels (4) is spaced apart in the circumferential direction of the guide head body.

4. A guide head as claimed in claim 1, characterized in that the end of the second oil channel (4) communicating with the first recess (2) is a first opening (5), the end of the second oil channel (4) communicating with the first through hole (1) is a second opening (6), the second oil channel (4) is arranged obliquely, and the height of the first opening (5) is higher than the height of the second opening (6).

5. A guide head according to claim 1, wherein the peripheral wall of the guide head body is further provided with a second recess (7) for mounting a sealing member.

6. A guide head according to claim 4, characterized in that the wall of the first through hole (1) is provided with a third groove (8) for mounting a seal, and that the second opening (6) is located above the third groove (8).

7. A guide head according to claim 6, wherein there are at least two of said third grooves (8) and each of said third grooves (8) is spaced axially of the guide head body.

8. A guide head according to claim 1, wherein the guide head body is further provided with a threaded section (9) at one end for attachment of a cover plate.

9. A shock absorber, comprising a piston rod and a guide head sleeved outside the piston rod, wherein the guide head is the guide head as claimed in any one of claims 1 to 8.