CN208417361U - Compressed spring - Google Patents

Compressed spring Download PDF

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Publication number
CN208417361U
CN208417361U CN201821085728.9U CN201821085728U CN208417361U CN 208417361 U CN208417361 U CN 208417361U CN 201821085728 U CN201821085728 U CN 201821085728U CN 208417361 U CN208417361 U CN 208417361U
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CN
China
Prior art keywords
guide rod
guide
guide post
compressed spring
retaining mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201821085728.9U
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Chinese (zh)
Inventor
贾镇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Weiqi Spring Science And Technology Co Ltd
Original Assignee
Changzhou Weiqi Spring Science And Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Priority to CN201821085728.9U priority Critical patent/CN208417361U/en
Application granted granted Critical
Publication of CN208417361U publication Critical patent/CN208417361U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of compressed springs, are related to spring technical field, to alleviate the unadjustable technical problem of initial tension of spring existing in the prior art.The compressed spring includes spring body, guide post group and guide rod;Guide post group includes two guide posts being oppositely arranged, and the outside of guide post has radially outwardly extending side plate, and inside is provided with bottom plate, and outside and inside are respectively the two sides of the axis direction along guide post, and accommodation space is formed inside guide post;One end of spring body and the side plate of one of guide post offset, and the side plate of the other end and another guide post offsets;The both ends of guide rod are each passed through the accommodation space that two guide posts are protruded into after the bottom plate of two guide posts, and the end flange of guide rod.When compressed spring provided by the utility model is compressed, the guide post of both ends of the spring setting is moved toward one another along guide rod, and guide rod is straight-bar, and guide post limits the bending of spring body, and spring body is compressed along straight line.

Description

Compressed spring
Technical field
The utility model relates to spring technical fields, more particularly, to a kind of compressed spring.
Background technique
Compressed spring is common components in mechanical equipment.Since length is longer in a free state for compressed spring, need Want biggish pressure or longer fixing screws the longer compressed spring of length under free state could be packed into mechanical equipment. After compressed spring is installed to mechanical equipment, bending is easy to happen when compressed.
The information disclosed in the background technology section is intended only to deepen the understanding to the utility model general background technology, And it is not construed as recognizing or implying in any form that the information constitutes the prior art known in those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of compressed springs, to alleviate compressed spring quilt existing in the prior art Flexible technical problem when compression.
To solve the above problems, the utility model the following technical schemes are provided:
A kind of compressed spring, including spring body, guide post group and guide rod;
The guide post group includes two guide posts being oppositely arranged, and the outside of the guide post, which has, radially to extend outwardly Side plate, inside is provided with bottom plate, and the outside and the inside are respectively the two sides of the axis direction along the guide post, and Accommodation space is formed inside the guide post;
One end of the spring body and the side plate of guide post described in one of them offset, the other end and another described guide post Side plate offset;
The both ends of the guide rod are each passed through the receiving that two guide posts are protruded into after the bottom plate of two guide posts Space, and the end flange of the guide rod.
Further,
It further include retaining mechanism, the retaining mechanism is located at the accommodation space, and is set in the guide rod, for fixing The relative position of the guide rod and the guide post.
Further,
The retaining mechanism includes nut and screw;
The nut is set in the guide rod and can move along the length direction of the guide rod;
The screw passes through the nut along the radial direction of the guide rod and is connected to the guide rod.
Further,
The retaining mechanism includes two screws;
Two screws are oppositely arranged, also, two screws are along the radial direction of the guide rod across described Nut is simultaneously connected to the guide rod.
Further,
The guide rod includes the first cambered surface, the second cambered surface, the first plane and the second plane;
First cambered surface, first plane, second cambered surface and second plane are sequentially connected and are closed;
First cambered surface and the second cambered surface are provided with external screw thread, the screw-internal thread fit of the external screw thread and the nut.
Further,
The retaining mechanism includes:
One sleeve is internally provided with an at least groove;
An at least resilient latching member, the radial direction along the guide post are arranged in the groove, and in elastic-restoring force It is lower that there is the trend moved to the center position of the guide post;
At least a positioning hole, the radial direction along the guide rod are arranged, and it is fixed to realize for accommodating the resilient latching member Position.
Further,
The resilient latching member includes power spring and the detent ball for being set to the power spring end, described fixed Position ball can extend into the location hole.
Further,
It further include the first elastic cushion, first elastic cushion is set between the retaining mechanism and the bottom plate.
Further,
It further include linear bearing, the linear bearing is set between the retaining mechanism and the bottom plate and is set in institute State guide rod.
Further,
It further include the second elastic cushion and gasket;
Second elastic cushion is set between the linear bearing and the retaining mechanism;The gasket is set in institute It states guide rod and is located at the outside of the bottom plate, for preventing dust from entering the linear bearing.
In conjunction with above technical scheme, the utility model bring beneficial effect is analyzed as follows:
The utility model provides a kind of compressed spring, including spring body, guide post group and guide rod;Guide post group includes two phases To the guide post of setting, the outside of guide post is with radially outwardly extending side plate, inside are provided with bottom plate, outside and inside Respectively along the two sides of the axis direction of guide post, and accommodation space is formed inside guide post;One end of spring body and wherein one The side plate of a guide post offsets, and the side plate of the other end and another guide post offsets;The both ends of guide rod are each passed through the bottom of two guide posts The accommodation space of two guide posts, and the end flange of guide rod are protruded into after plate.
When compressed spring provided by the utility model is compressed, the guide post of both ends of the spring setting is moved toward one another along guide rod, and Guide rod is straight-bar, and guide post limits the bending of spring body, and spring body is compressed along straight line.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating Structure specifically noted by book, claims and attached drawing is achieved and obtained.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the first embodiment of compressed spring provided by the utility model;
Fig. 2 is the structural schematic diagram of second of embodiment of compressed spring provided by the utility model;
Fig. 3 is the top view of the retaining mechanism of compressed spring provided by the utility model;
Fig. 4 is the cross-sectional view in the face A-A along Fig. 1.
Fig. 5 is the structural schematic diagram of the third embodiment of compressed spring provided by the utility model;
Fig. 6 is the structural schematic diagram of the 4th kind of embodiment of compressed spring provided by the utility model;
Fig. 7 is the enlarged drawing of a-quadrant in Fig. 5.
Icon: 1- spring body;2- guide post;21- side plate;22- bottom plate;3- guide rod;The first cambered surface of 31-;32- first is flat Face;The second cambered surface of 33-;The second plane of 34-;4- retaining mechanism;41- nut;42- screw;43- sleeve;44- resilient latching member; 45- location hole;The first elastic cushion of 5-;6- linear bearing;The second elastic cushion of 7-;8- gasket.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection;It can be mechanical connection, be also possible to be electrically connected;Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.
Embodiment 1 and embodiment 2 are described in detail with reference to the accompanying drawing:
Embodiment 1
The present embodiment provides a kind of compressed springs, please also refer to the Fig. 1 to Fig. 4 in Figure of description.Fig. 1 is that this is practical A kind of structural schematic diagram of embodiment of the compressed spring of novel offer;Fig. 2 is compressed spring provided by the utility model The structural schematic diagram of another embodiment;Fig. 3 is the top view of the retaining mechanism 4 of compressed spring provided by the utility model; Fig. 4 is the cross-sectional view in the face A-A along Fig. 1.
The compressed spring includes spring body 1,2 groups of guide post and guide rod 3;2 groups of guide post include two guide posts being oppositely arranged 2, the outside of guide post 2 is provided with bottom plate 22 with radially outwardly extending side plate 21, inside, and outside and inside are respectively Accommodation space is formed along the two sides of the axis direction of guide post 2, and inside guide post 2;It is led with one of them one end of spring body 1 The side plate 21 of column 2 offsets, and the side plate 21 of the other end and another guide post 2 offsets;The both ends of guide rod 3 are each passed through two guide posts 2 Bottom plate 22 after protrude into the accommodation spaces of two guide posts 2, and the end flange of guide rod 3.
When compressed spring provided in this embodiment is compressed, the guide post 2 of 1 both ends of spring body setting is transported in opposite directions along guide rod 3 It is dynamic, and guide rod 3 is straight-bar, guide post 2 limits the bending of spring body 1, and spring body 1 is compressed along straight line.
In the optinal plan of the present embodiment, more preferably,
The compressed spring further includes retaining mechanism 4, and retaining mechanism 4 is located at accommodation space, and is set in guide rod 3, for solid Determine the relative position of guide rod 3 and guide post 2.
The pretightning force of the compressed spring, which can according to need, to be adjusted.When needing to increase the pretightning force of the compressed spring, Retaining mechanism 4 is fixedly connected to after the movement of the direction of bottom plate 22 with guide rod 3, the length that guide rod 3 protrudes into accommodation space is increased Degree, so that the length of spring body 1 reduces, increases the pretightning force of the compressed spring.Need to reduce the compressed spring Pretightning force makes, and is fixedly connected after retaining mechanism 4 is moved to the direction far from bottom plate 22 with guide rod 3, reduces guide rod 3 and protrudes into receiving The length in space reduces the pretightning force of the compressed spring so that the length of spring body 1 increases.
In the optinal plan of the present embodiment, more preferably,
As shown in figure 3, retaining mechanism 4 includes nut 41 and screw 42;Nut 41 is set in guide rod 3 and can be along guide rod 3 Length direction it is mobile;Screw 42 passes through nut 41 along the radial direction of guide rod 3 and is connected to guide rod 3.
Nut 41 is provided with the threaded hole cooperated with screw 42, and screw 42 is packed into threaded hole, is realized by rotary screw 42 Movement of the screw 42 along 3 radial direction of guide rod.The front end of screw 42 can abut with guide rod 3, guide rod 3 and nut 41 is fixed.
When needing to adjust the pretightning force of the compressed spring, rotary screw 42 makes screw 42 loosen guide rod 3, and adjustment guide rod 3 is stretched Enter the length of guide post 2, then along the length direction travelling nut 41 of guide rod 3 to required position, screw 42 is reversely rotated, by screw 42 front end pushes against guide rod 3, to realize the adjustment of length and pretightning force.
In the optinal plan of the present embodiment, more preferably,
As shown in figure 3, retaining mechanism 4 includes two screws 42;Two screws 42 are oppositely arranged, also, two screws 42 Nut 41 is passed through along the radial direction of guide rod 3 and is connected to guide rod 3.
The axis of two screws 42 is overlapped, and when two screws 42 abut guide rod 3 simultaneously, 3 uniform force of guide rod is not easy to send out Raw inclination.
In the optinal plan of the present embodiment, more preferably,
As shown in figure 4, guide rod 3 includes the first cambered surface 31, the second cambered surface 33, the first plane 32 and the second plane 34;First Cambered surface 31, the first plane 32, the second cambered surface 33 and the second plane 34 are sequentially connected and are closed;First cambered surface 31 and the second cambered surface 33 It is provided with external screw thread, the screw-internal thread fit of external screw thread and nut 41.
If guide rod 3 is without the first plane 32 and the second plane 34, after the front end of screw 42 pushes against guide rod 3, guide rod 3 easily occurs Rotation, is worn guide rod 3 and screw 42.The front end of two screws 42 is connected to the first plane 32 and the second plane respectively 34, it will not rotate after pushing against guide rod 3, mitigate the abrasion of guide rod 3 and screw 42.
As shown in Figure 1, the compressed spring further includes the first elastic cushion 5, the first elastic cushion 5 is set to retaining mechanism 4 and bottom Between plate 22.First elastic cushion 5 can be the soft materials such as rubber, cork.
At work due to the compressed spring, spring body 1 frequently can be compressed and be replied, in retaining mechanism 4 and bottom plate First elastic cushion 5 is set between 22, so that retaining mechanism 4 is hit elastic cushion, rather than bottom plate 22, reduction noise mitigate to bottom plate 22 destruction extends the service life of the compressed spring.
In the optinal plan of the present embodiment, more preferably,
As shown in Fig. 2, further including linear bearing 6, linear bearing 6 is set between retaining mechanism 4 and bottom plate 22 and is set with In guide rod 3.It further include the second elastic cushion 7, the second elastic cushion 7 is set between linear bearing 6 and retaining mechanism 4.It further include close Packing 8, gasket 8 is set in guide rod 3 and is located at the outside of bottom plate 22, for preventing dust from entering linear bearing 6.
When the compressed spring works, linear bearing 6 can guarantee the direction of motion of guide rod 3, prevent guide rod 3 from rolling, simultaneously It can be avoided guide rod 3 to rub with bottom plate 22, and then reduce noise when compressed spring work.
Second elastic cushion 7 can reduce shock of the retaining mechanism 4 to linear bearing 6, mitigates the abrasion of linear bearing 6, prolongs The service life of long linear bearing 6.Second elastic cushion 7 can be the materials such as rubber, cork.
Guide rod 3 passes through gasket 8, and the inside of gasket 8 and the outside of guide rod 3 fit closely, and prevent guide rod 3 by dust It brings linear bearing 6 into, alleviates the abrasion of linear bearing 6.Gasket 8 can be rubber, cork etc..
Embodiment 2
The present embodiment provides a kind of compressed springs, please also refer to Fig. 5 to Fig. 7 in Figure of description.Fig. 5 is that this is practical The structural schematic diagram of the third embodiment of the compressed spring of novel offer;Fig. 6 is compressed spring provided by the utility model The 4th kind of embodiment structural schematic diagram;Fig. 7 is the enlarged drawing of a-quadrant in Fig. 5.
As shown in Figure 5 and Figure 6, which includes spring body 1,2 groups of guide post, guide rod 3 and retaining mechanism 4;Guide post 2 Group includes two guide posts 2 being oppositely arranged, and the outside of guide post 2 has radially outwardly extending side plate 21, inside setting There is bottom plate 22, outside and inside are respectively the two sides of the axis direction along guide post 2, and form accommodation space inside guide post 2;Bullet One end of spring ontology 1 and the side plate 21 of one of guide post 2 offset, and the side plate 21 of the other end and another guide post 2 offsets;Guide rod The accommodation space of two guide posts 2 is protruded into after being each passed through the bottom plate 22 of two guide posts 2 in 3 both ends, and is capable of stretching for adjustment end Enter length;Retaining mechanism 4 is located at accommodation space, and is set in guide rod 3, the relative position for location guide 3 and guide post 2.
The pretightning force of compressed spring provided in this embodiment, which can according to need, to be adjusted.Need to increase the compressed spring Pretightning force when, by retaining mechanism 4 to the direction close to bottom plate 22 it is mobile after be fixedly connected with guide rod 3, increase guide rod 3 and protrude into appearance The length in space received increases the pretightning force of the compressed spring so that the length of spring body 1 reduces.Needing to reduce should The pretightning force of compressed spring makes, and is fixedly connected after retaining mechanism 4 is moved to the direction far from bottom plate 22 with guide rod 3, reduction is led Bar 3 protrudes into the length of accommodation space, so that the length of spring body 1 increases, reduces the pretightning force of the compressed spring.
In the optinal plan of the present embodiment, more preferably,
As shown in fig. 7, retaining mechanism 4 includes: a sleeve 43, it is internally provided with an at least groove;An at least elastic locking Part 44, the radial direction along guide post 2 are arranged in the groove, and are had under elastic-restoring force and moved to the center position of guide post 2 Trend;At least a positioning hole 45, the radial direction along guide rod 3 are arranged, for accommodating resilient latching member 44 to realize positioning.
In the optinal plan of the present embodiment, more preferably,
As shown in fig. 7, resilient latching member 44 includes power spring and the detent ball for being set to power spring end, determine Position ball can extend into location hole 45.
Guide rod 3 is provided with multiple location holes 45 along its length, can by making detent ball fall into different holes It realizes that adjusting guide rod 3 protrudes into the length of accommodation space, and then adjusts the length and rigidity of the compressed spring.
Compressed spring using the retaining mechanism 4 of the present embodiment is suitable for the mechanical equipment small to Hooke coefficient requirements.Bullet During compression and rebound, which will not bend spring ontology 1, i.e., ball will not be slided from location hole 45 Out.Operator applies the external force along 3 length direction of guide rod to sleeve 43, which skids off from location hole 45, until ball is fallen Enter required location hole 45.
In the optinal plan of the present embodiment, more preferably,
As shown in figure 5, further including the first elastic cushion 5, the first elastic cushion 5 is set between retaining mechanism 4 and bottom plate 22.
At work due to the compressed spring, spring body 1 frequently can be compressed and be replied, in retaining mechanism 4 and bottom plate First elastic cushion 5 is set between 22, so that retaining mechanism 4 is hit elastic cushion, rather than bottom plate 22, reduction noise mitigate to bottom plate 22 destruction extends the service life of the compressed spring.
In the optinal plan of the present embodiment, more preferably,
As shown in fig. 6, further including linear bearing 6, linear bearing 6 is set between retaining mechanism 4 and bottom plate 22 and is set with In guide rod 3.It further include the second elastic cushion 7, the second elastic cushion 7 is set between linear bearing 6 and retaining mechanism 4.It further include close Packing 8, gasket 8 is set in guide rod 3 and is located at the outside of bottom plate 22, for preventing dust from entering linear bearing 6.
When the compressed spring works, linear bearing 6 can guarantee the direction of motion of guide rod 3, prevent guide rod 3 from rolling, simultaneously It can be avoided guide rod 3 to rub with bottom plate 22, and then reduce noise when compressed spring work.
Second elastic cushion 7 can reduce shock of the retaining mechanism 4 to linear bearing 6, mitigates the abrasion of linear bearing 6, prolongs The service life of long linear bearing 6.Second elastic cushion 7 can be the materials such as rubber, cork.
Guide rod 3 passes through gasket 8, and the inside of gasket 8 and the outside of guide rod 3 fit closely, and prevent guide rod 3 by dust It brings linear bearing 6 into, alleviates the abrasion of linear bearing 6.Gasket 8 can be rubber, cork etc..
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System;Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced;And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of compressed spring, which is characterized in that including spring body (1), guide post (2) is organized and guide rod (3);
The guide post (2) group includes two guide posts (2) being oppositely arranged, the outside of the guide post (2) have radially to The side plate (21) of outer extension, inside are provided with bottom plate (22), and the outside and the inside are respectively along the axis of the guide post (2) The two sides in line direction, and accommodation space is formed inside the guide post (2);
One end of the spring body (1) offsets with the side plate (21) of guide post described in one of them (2), the other end and another institute The side plate (21) for stating guide post (2) offsets;
Two guide posts are protruded into after being each passed through the bottom plate (22) of two guide posts (2) in the both ends of the guide rod (3) (2) accommodation space, and the end flange of the guide rod (3).
2. compressed spring according to claim 1, which is characterized in that
It further include retaining mechanism (4), the retaining mechanism (4) is located at the accommodation space, and is set in the guide rod (3), uses In the relative position of the fixation guide rod (3) and the guide post (2).
3. compressed spring according to claim 2, which is characterized in that
The retaining mechanism (4) includes nut (41) and screw (42);
The nut (41) is set in the guide rod (3) and can be mobile along the length direction of the guide rod (3);
The screw (42) passes through the nut (41) along the radial direction of the guide rod (3) and is connected to the guide rod (3).
4. compressed spring according to claim 3, which is characterized in that
The retaining mechanism (4) includes two screws (42);
Two screws (42) are oppositely arranged, also, radial direction of two screws (42) along the guide rod (3) is worn It crosses the nut (41) and is connected to the guide rod (3).
5. compressed spring according to claim 4, which is characterized in that
The guide rod (3) includes the first cambered surface (31), the second cambered surface (33), the first plane (32) and the second plane (34);
First cambered surface (31), first plane (32), second cambered surface (33) and second plane (34) are successively It connects and is closed;
First cambered surface (31) and the second cambered surface (33) are provided with external screw thread, the interior spiral shell of the external screw thread and the nut (41) Line cooperation.
6. compressed spring according to claim 2, which is characterized in that
The retaining mechanism (4) includes:
One sleeve (43) is internally provided with an at least groove;
An at least resilient latching member (44), the radial direction along the guide post (2) are arranged in the groove, and in elastic recovery There is the trend moved to the center position of the guide post (2) under power;
At least a positioning hole (45), along the guide rod (3) radial direction be arranged, for accommodate the resilient latching member (44) with Realize positioning.
7. compressed spring according to claim 6, which is characterized in that
The resilient latching member (44) includes power spring and the detent ball for being set to the power spring end, described fixed Position ball can extend into the location hole (45).
8. compressed spring according to claim 2, which is characterized in that
It further include the first elastic cushion (5), first elastic cushion (5) is set to the retaining mechanism (4) and the bottom plate (22) Between.
9. according to the described in any item compressed springs of claim 5 or 7, which is characterized in that
It further include linear bearing (6), the linear bearing (6) is set between the retaining mechanism (4) and the bottom plate (22) And it is set in the guide rod (3).
10. compressed spring according to claim 9, which is characterized in that
It further include the second elastic cushion (7) and gasket (8);
Second elastic cushion (7) is set between the linear bearing (6) and the retaining mechanism (4);The gasket (8) It is set in the guide rod (3) and is located at the outside of the bottom plate (22), for preventing dust from entering the linear bearing (6).
CN201821085728.9U 2018-07-09 2018-07-09 Compressed spring Expired - Fee Related CN208417361U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821085728.9U CN208417361U (en) 2018-07-09 2018-07-09 Compressed spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821085728.9U CN208417361U (en) 2018-07-09 2018-07-09 Compressed spring

Publications (1)

Publication Number Publication Date
CN208417361U true CN208417361U (en) 2019-01-22

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CN201821085728.9U Expired - Fee Related CN208417361U (en) 2018-07-09 2018-07-09 Compressed spring

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108679139A (en) * 2018-07-09 2018-10-19 常州伟琪弹簧科技有限公司 Compressed spring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108679139A (en) * 2018-07-09 2018-10-19 常州伟琪弹簧科技有限公司 Compressed spring

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Granted publication date: 20190122