CN213929251U

CN213929251U - Sealing element for self-locking gas spring valve needle

Info

Publication number: CN213929251U
Application number: CN202023017981.0U
Authority: CN
Inventors: 陈晨
Original assignee: Wuxi Weida Gas Spring Co ltd
Current assignee: Wuxi Weida Gas Spring Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-08-10
Anticipated expiration: 2030-12-16

Abstract

The utility model discloses a self-locking type air spring sealing member for needle, including first mount pad, second mount pad and sealing washer, sealing washer fixed connection is on first mount pad, the inserted bar of fixedly connected with symmetry on the first mount pad terminal surface, set up the rectangular channel of symmetry on the inserted bar, the first spring of fixedly connected with in the rectangular channel, fixedly connected with bayonet lock on the first spring, set up the slot of inserted bar looks adaptation on the second mount pad, the opening has been seted up to second mount pad rear end face, be provided with the carriage release lever in the opening, the third spring of fixedly connected with longitudinal symmetry on the carriage release lever, the carriage release lever lower extreme extends to in the slot and fixedly connected with push pedal, the sealing washer is provided with the ceramic fibre cloth layer outward, the ceramic fibre cloth layer is provided with sealed glue film outward. The utility model discloses an inserted bar of first mount pad carries out the joint in inserting the slot of second mount pad and fixes for it is very convenient to install and dismantle.

Description

Sealing element for self-locking gas spring valve needle

Technical Field

The utility model relates to a sealing member technical field for the needle specifically is a self-locking type air spring sealing member for needle.

Background

The gas spring has wide application, and the working principle of the gas spring is that inert gas or oil-gas mixture is filled in a sealed pressure cylinder, so that the pressure in a cavity is many times higher than the atmospheric pressure, and the movement of a piston rod is realized by utilizing the pressure difference generated by the fact that the cross section area of the piston rod is smaller than that of the piston. The gas and oil circuit of the self-locking gas spring is communicated with the rod cavity and the rodless cavity through the stop valve and then controlled through the sealing element of the valve needle.

At present, the sealing element for the existing valve needle mostly has the problem of difficult installation and disassembly, and the reciprocating motion of the sealing element causes the sealing element to be easy to damage, thus influencing the self-locking performance of the gas spring.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a self-locking type air spring sealing member for needle to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing element for a self-locking air spring valve needle comprises a first mounting seat, a second mounting seat and a sealing ring, wherein the sealing ring is fixedly connected to the first mounting seat, the second mounting seat is fixedly connected to the valve needle, symmetrical insertion rods are fixedly connected to the end face of the first mounting seat, symmetrical rectangular grooves are formed in the insertion rods, a first spring is fixedly connected to the rectangular grooves, a bayonet lock is fixedly connected to the first spring, a slot matched with the insertion rods is formed in the second mounting seat, a second spring is fixedly connected to the slot, an opening is formed in the rear end face of the second mounting seat, guide rods which are symmetrical up and down are fixedly connected to the opening, a moving rod is movably connected to the guide rods, a third spring which is symmetrical up and down is fixedly connected to the moving rod, and the other end of the third spring is fixedly connected to the second mounting seat, the lower end of the moving rod extends into the slot and is fixedly connected with the push plate, a ceramic fiber cloth layer is arranged outside the sealing ring, and a sealing glue layer is arranged outside the ceramic fiber cloth layer.

Preferably, the opening at the lower end of the slot is provided with an inclined plane.

Preferably, the upper end surface of the bayonet is arranged in a semicircular shape.

Preferably, the first mounting seat is provided with a rubber ring, and the second mounting seat is provided with an annular clamping groove matched with the rubber ring.

Preferably, the number of the inserted bars on the first mounting seat is not less than one and not more than one, and the inserted bars are uniformly distributed.

Compared with the prior art, the beneficial effects of the utility model are that:

1. when the utility model is installed, the inserted link on the first installation seat is inserted into the slot on the second installation seat, when the inserted link enters, the bayonet lock compresses the first spring to be taken in the rectangular slot, when the inserted link is completely inserted into the slot, the inserted link compresses the second spring, meanwhile, the bayonet lock pushes the bayonet lock out of the rectangular groove under the action of a compressed first spring, the inserted link is fixed in the slot by the bayonet lock being clamped in the slot, so that the first mounting seat and the second mounting seat are fixedly connected, thereby completing the installation of the sealing element, when the sealing element is disassembled and the two moving rods are simultaneously pushed to the middle parts of the two moving rods, the moving rods drive the push plate to move to the middle part, the bayonet lock is pushed into the rectangular groove, the compressed second spring pushes the inserted link out of the slot, the first mounting seat and the second mounting seat are separated, and the sealing element is disassembled;

2. the utility model discloses a set up rubber ring and ring groove for this sealing member leakproofness is stronger, is provided with ceramic fibre cloth layer and sealed glue film outside the sealing washer simultaneously, and when making sealing member and valve body activity, the wearability is higher, increases the practical life of sealing member.

Drawings

Fig. 1 is a schematic view of the overall structure of a sealing member for a self-locking gas spring valve needle of the present invention;

fig. 2 is an enlarged structural view of a position a of a sealing member for a self-locking gas spring needle according to the present invention;

fig. 3 is a structural view of a seal ring in a sealing member for a valve needle of a self-locking gas spring according to the present invention;

fig. 4 is a structural view of a second mounting seat in a sealing member for a self-locking gas spring needle according to the present invention.

In the figure: 1. a first mounting seat; 2. a second mounting seat; 3. a valve needle; 4. a valve body; 5. a seal ring; 6. an annular neck; 7. a rubber ring; 8. inserting a rod; 9. a rectangular groove; 10. a first spring; 11. a bayonet lock; 12. a slot; 13. a second spring; 14. a port; 15. a guide bar; 16. a third spring; 17. a travel bar; 18. pushing the plate; 19. a ceramic fiber cloth layer; 20. and (6) sealing the adhesive layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a sealing element for a self-locking gas spring valve needle comprises a first mounting seat 1, a second mounting seat 2 and a sealing ring 5, wherein the first mounting seat 1, the second mounting seat 2 and the sealing ring 5 are cylindrical, the sealing ring 5 is fixedly connected to the first mounting seat 1, the second mounting seat 2 is fixedly connected to a valve needle 3, the end surface of the first mounting seat 1 is fixedly connected with an insertion rod 8 which is bilaterally symmetrical, a symmetrical rectangular groove 9 is formed in the insertion rod 8, a first spring 10 is fixedly connected in the rectangular groove 9, a bayonet pin 11 is fixedly connected on the first spring 10, a slot 12 which is matched with the insertion rod 8 is formed in the second mounting seat 2, a second spring 13 is fixedly connected in the slot 12, the second spring 13 is used for ejecting the insertion rod 8, a through hole 14 is formed in the rear end surface of the second mounting seat 2, the through hole 14 is communicated with the slot 12, a guide rod 15 which is vertically symmetrical is fixedly connected on the through hole 14, and a moving rod 17 is movably connected on the guide rod 15, a third spring 16 which is symmetrical up and down is fixedly connected on the moving rod 17, the other end of the third spring 16 is fixedly connected on the second mounting seat 2, the lower end of the moving rod 17 extends into the slot 12 and is fixedly connected with a push plate 18, when the plunger 8 is inserted into the slot 12, the first spring 10 pushes the detent 11 out of the rectangular slot 9, the plunger 8 is fixed in the slot 12 by the detent 11 being caught in the slot 12, when the two moving rods 17 are pushed towards the middle parts of the two moving rods 17 at the same time, the moving rods 17 drive the push plate 18 to move towards the middle part, the bayonet 11 is pushed into the rectangular groove 9, the second spring 13 which is compressed at this time pushes the plunger 8 out of the slot 12, therefore, the first mounting seat 1 is separated from the second mounting seat 2, the ceramic fiber cloth layer 19 is arranged outside the sealing ring 5, the sealing glue layer 20 is arranged outside the ceramic fiber cloth layer 19, and the sealing glue layer 20 is attached to the valve body 4 to form a sealing state.

The opening at the lower end of the slot 12 is provided with an inclined surface, so that the insertion of the insertion rod 8 is facilitated.

The upper end face of the bayonet lock 11 is semicircular, so that the bayonet lock 11 can be conveniently received in the rectangular groove 9 when the inserted bar 8 enters the inserting groove 12.

Be provided with rubber ring 7 on the first mount pad 1, be provided with on the second mount pad 2 with the ring groove 6 of 7 looks adaptations of rubber ring, through the looks adaptation of rubber ring 7 and ring groove 6, increase the sealed effect of sealing member.

2 are no less than, are not more than 4 to the quantity of inserted bar 8 on the first mount pad 1, and evenly distributed, then can't guarantee the stability that first mount pad 1 and second mount pad 2 are connected too little, when 8 quantity of inserted bar are too much, increase the whole heavy burden of sealing member, increase the cost.

The working principle is as follows: when the utility model is installed, the inserted link 8 on the first installation base 1 is inserted in alignment with the slot 12 on the second installation base 2, when the inserted link 8 enters, the bayonet lock 11 compresses the first spring 10 to be taken in the rectangular groove 9, when the inserted link 8 is completely inserted into the slot 12, the inserted link 8 compresses the second spring 13, simultaneously the bayonet lock 11 pushes the bayonet lock 11 out of the rectangular groove 9 under the action of the compressed first spring 10, the inserted link 8 is fixed in the slot 12 through the bayonet lock 11 being clamped in the slot 12, so that the first installation base 1 is fixedly connected with the second installation base 2, thereby completing the installation of the sealing element, when the sealing element is disassembled, when the two moving rods 17 are pushed to the middle parts of the two moving rods 17 at the same time, the moving rods 17 drive the push plate 18 to move to the middle part, and then the bayonet lock 11 is pushed into the rectangular groove 9, at the moment, the compressed second spring 13 pushes the inserted link 8 out of the slot 12, thereby separating the first installation base 1 from the second installation base 2, accomplish the dismantlement of sealing member, make this sealing member installation and dismantlement very convenient through such setting up, through setting up rubber ring 7 and ring groove 6 for this sealing member leakproofness is stronger, and sealing washer 5 is provided with ceramic fibre cloth layer 19 and sealing glue layer 20 outward simultaneously, makes when sealing member and the activity of valve body 4, and the wearability is higher, increases the practical life of sealing member.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sealing member for self-locking type gas spring needle, includes first mount pad (1), second mount pad (2) and sealing washer (5), its characterized in that: the sealing ring (5) is fixedly connected to the first mounting seat (1), the second mounting seat (2) is fixedly connected to the valve needle (3), symmetrical insertion rods (8) are fixedly connected to the end face of the first mounting seat (1), symmetrical rectangular grooves (9) are formed in the insertion rods (8), first springs (10) are fixedly connected to the inside of the rectangular grooves (9), bayonet pins (11) are fixedly connected to the first springs (10), insertion grooves (12) matched with the insertion rods (8) are formed in the second mounting seat (2), second springs (13) are fixedly connected to the inside of the insertion grooves (12), through holes (14) are formed in the rear end face of the second mounting seat (2), vertically symmetrical guide rods (15) are fixedly connected to the through holes (14), movable moving rods (17) are movably connected to the guide rods (15), vertically symmetrical third springs (16) are fixedly connected to the moving rods (17), the other end fixed connection of third spring (16) is on second mount pad (2), carriage release lever (17) lower extreme extends to in slot (12) and fixedly connected with push pedal (18), sealing washer (5) are provided with ceramic fibre cloth layer (19) outward, ceramic fibre cloth layer (19) are provided with sealing glue layer (20) outward.

2. A seal for a self-locking gas spring valve pin according to claim 1, characterized in that: the opening at the lower end of the slot (12) is provided with an inclined plane.

3. A seal for a self-locking gas spring valve pin according to claim 1, characterized in that: the upper end surface of the bayonet lock (11) is semicircular.

4. A seal for a self-locking gas spring valve pin according to claim 1, characterized in that: the rubber ring (7) is arranged on the first mounting seat (1), and the annular clamping groove (6) matched with the rubber ring (7) is arranged on the second mounting seat (2).

5. A seal for a self-locking gas spring valve pin according to claim 1, characterized in that: the number of inserted bar (8) is no less than 2 on first mount pad (1), is no more than 4, and evenly distributed.