Bolt screw

Abstract

The utility model discloses a bolt type screw which comprises a screw body, a first end of the screw body is used for being fixed to a first object, and a second end of the screw body is used for being fixed to a second object. One end of the elastic piece is in contact with the second end of the screw body, and the other end of the elastic piece can move relative to the screw body; and the lantern ring is fixed at the other end of the elastic piece and used for abutting against a second object, and the second object is located between the lantern ring and the first object in a floating mode. The bolt type screw can fix one object relative to the other object in a floating mode.

Description

Technical Field

[0001] The present application relates to a captive screw, and in particular to a captive screw used for a server. Background Art

[0002] Cap screws are usually used to fix different objects. Some existing cap screws can usually fix two objects together firmly, but such a fixing method makes the fixed objects lack a certain degree of freedom, so it cannot adapt to some specific usage scenarios. Therefore, it is necessary to develop a cap screw that can selectively fix different objects together movably. Utility Model Content

[0003] An object of the present application is to provide a captive screw that can selectively and floatingly fix different objects together.

[0004] An object of the present application is to provide a captive screw which is easy to operate and has a reliable structure.

[0005] To achieve the above-mentioned purpose, the present application provides a bolt-type screw, which includes: a screw body, a first end of the screw body is used to be fixed to a first object; an elastic member, one end of the elastic member contacts the second end of the screw body, and the other end of the elastic member can move relative to the screw body; a ring, the ring is fixed to the other end of the elastic member and is used to abut against a second object, wherein the second object is floatingly located between the ring and the first object.

[0006] In one embodiment, the collar is sleeved on the screw body, the elastic member is a coil spring, and the coil spring surrounds the screw body.

[0007] In one embodiment, one end of the elastic member is fixedly connected to the second end of the screw body, a thread is formed on the first end of the screw body, and the screw body passes through a hole on the second object and is fixed to the first object by means of the thread.

[0008] In one embodiment, the collar has a first position in which the elastic member is compressed by a first amount of compression and a second position in which the elastic member is compressed by a second amount of compression greater than the first amount of compression.

[0009] In one embodiment, when the screw body passes through the hole on the second object and is fixed to the first object, the collar is in the first position, the second position, or between the first position and the second position.

[0010] In one embodiment, the screw body has a circumferential groove, steps are formed at both ends of the circumferential groove, and the ring is limited in the circumferential groove so that the steps at both ends of the circumferential groove correspond to the first position and the second position of the ring respectively.

[0011] In one embodiment, the screw body has a step that blocks the collar such that the step corresponds to the first position of the collar.

[0012] In one embodiment, the screw body has a step that blocks the collar such that the step corresponds to the second position of the collar.

[0013] In one embodiment, the collar has a gap.

[0014] In one embodiment, the collar is annular in shape, and the inner side of the collar contacts the outer peripheral surface of the screw body.

[0015] In one embodiment, the collar includes a first section and a second section in the axial direction, the outer diameter of the first section is smaller than the outer diameter of the second section, and the second section of the collar abuts against the second object.

[0016] In one embodiment, the second end of the screw body comprises a head, and one end of the elastic member is fixedly connected to the head.

[0017] In one embodiment, the outer diameter of the head is greater than or equal to the outer diameter of the elastic member.

[0018] In one embodiment, a side of the head away from the elastic member has a groove.

[0019] In one embodiment, the groove is formed in a hexagonal star shape.

[0020] In one embodiment, the captive screw comprises a retaining plate, the screw body has a locking groove, and the retaining plate is sleeved on the screw body and fixed to the locking groove.

[0021] In one embodiment, the retaining plate includes an outer peripheral portion, a bent portion and an inner peripheral portion, wherein the bent portion is located between the outer peripheral portion and the inner peripheral portion and forms an angle with respect to any one of the outer peripheral portion and the inner peripheral portion.

[0022] In one embodiment, the inner peripheral portion has a plurality of protruding pieces extending inwardly, and the retaining piece is fixed to the locking groove by means of the plurality of protruding pieces.

[0023] In one embodiment, the outer diameter of the stopper is greater than or equal to the outer diameter of the elastic member.

[0024] In one embodiment, the second end of the screw body has a protruding column.

[0025] In one embodiment, the protrusion has a hexagonal cross-section.

[0026] In one embodiment, the first object is a server rack and the second object is a wiring harness connector.

[0027] The captive screw of the present application can achieve at least one of the following beneficial effects.

[0028] The captive screw of the present application can fix one object relative to another object in a floating manner.

[0029] The bolt-type screw of the present application has a reliable structure and is not prone to misoperation.

[0030] The captive screw of the present application can provide a required movable distance for the fixed object. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various objects, features and advantages of the present application will become more apparent by considering the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present application and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:

[0032] Figure 1 is a front view of a captive screw according to a first embodiment of the present application;

[0033] Figure 2 is a top view of a captive screw according to a first embodiment of the present application;

[0034] Figure 3 is a bottom view of the captive screw of the first embodiment of the present application;

[0035] Figure 4 is a left side view of the captive screw of the first embodiment of the present application;

[0036] Figure 5 is a right side view of the captive screw of the first embodiment of the present application;

[0037] Figure 6 is a rear view of the captive screw of the first embodiment of the present application;

[0038] Figure 7 is a three-dimensional diagram of a captive screw according to a first embodiment of the present application;

[0039] Figure 8 is another perspective view of the captive screw of the first embodiment of the present application;

[0040] Fig. 9is a perspective exploded view of a captive screw according to a first embodiment of the present application;

[0041] Fig.10 is a top view of a captive screw according to a first embodiment of the present application;

[0042] Fig.11 along Fig.10 A cross-sectional view taken along line AA of , wherein the collar is in a first position;

[0043] Fig.12 along Fig.10 A cross-sectional view taken along line AA of the embodiment of the present invention, wherein the collar is in a second position;

[0044] Fig.13 is a front view of a captive screw according to a second embodiment of the present application;

[0045] Fig.14 is a top view of a captive screw according to a second embodiment of the present application;

[0046] Fig.15 is a bottom view of a captive screw according to a second embodiment of the present application;

[0047] Fig.16 is a left side view of a captive screw according to a second embodiment of the present application;

[0048] Fig.17 is a right side view of a captive screw according to a second embodiment of the present application;

[0049] Fig.18 is a rear view of a captive screw according to a second embodiment of the present application;

[0050] Fig.19 is a three-dimensional diagram of a captive screw according to a second embodiment of the present application;

[0051] Fig. 20 is another stereoscopic view of the captive screw of the second embodiment of the present application;

[0052] Fig.21 is a perspective exploded view of a captive screw according to a second embodiment of the present application;

[0053] Fig. 22 is a top view of a captive screw according to a second embodiment of the present application;

[0054] Fig.23 along Fig.10 A cross-sectional view taken along line BB of the embodiment of the present invention, wherein the collar is in a first position;

[0055] Fig.24 along Fig.10 A cross-sectional view taken along line BB, wherein the collar is in the second position.

[0056] List of reference numerals:

[0057] 100 Cap screw

[0058] 110 Screw body

[0059] 111 Head

[0060] 112 Body part

[0061] 113 Circumferential groove

[0062] 114 steps

[0063] 115 Threaded part

[0064] 116 Grooves

[0065] 117 Boss

[0066] 118 Locking slot

[0067] 120 Stopper

[0068] 121 Peripheral part

[0069] 122 Bending part

[0070] 123 Inner Periphery

[0071] 124 Tabs

[0072] 130 Elastic parts

[0073] 140 Ring

[0074] 141 Part 1

[0075] 142 Second Section

[0076] 143 Gap DETAILED DESCRIPTION

[0077] In order to further illustrate the principle and structure of the present application, the preferred embodiments of the present application are now described in detail in conjunction with the accompanying drawings. However, the embodiments are only for illustration and explanation and cannot be used to limit the scope of patent protection of the present application.

[0078] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "an", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0079] The captive screw 100 of the present application can fix two or more objects together in a floating manner. The captive screw 100 can be used on a server, specifically, on a server rack. The captive screw 100 can connect a harness connector (not shown) to a board of a server rack (not shown), but the present application is not limited thereto. The captive screw 100 can be used in other desired situations.

[0080] A first embodiment of the present application will be described below.

[0081] See also Figure 1-Figure 8 The cap screw 100 may include a screw body 110, an elastic member 130 and a collar 140. The screw body 110 may be a rod that is cylindrical in shape as a whole. Figure 1 The lower end of the elastic member 130 may be fixed to a first object (not shown). The first object may be a server rack or a part of a server rack, but the present application is not limited thereto. Figure 1 The upper end of the screw body 110 may contact the first end of the screw body 110 (such as Figure 1 In another embodiment, one end of the elastic member 130 may be fixedly connected to the first end of the screw body 110. The other end of the elastic member 130 (eg Figure 1 The lower end of the screw body 110 can be moved relative to the screw body 110. The collar 140 can be fixed to the other end of the elastic member 130 so as to move together with the other end of the elastic member 130. The collar 140 can be used to abut against a second object (not shown). The second object can be a wiring harness connector, but the present application is not limited thereto.

[0082] The collar 140 may be sleeved on the screw body 110. The elastic member 130 may be a coil spring. Alternatively, the elastic member 130 may be other elements that provide elastic force. The elastic member 130 may surround the screw body 110, that is, the elastic member 130 may be sleeved on the screw body 110, but the present application is not limited thereto.

[0083] The first end of the screw body 110 may be threaded. The screw body 110 may pass through a hole on the second object. The thread on the screw body 110 may be screwed into a corresponding screw hole on the first object.

[0084] See also Figure 7 and Figure 8 , the second end of the screw body 110 may include a head 111. One end of the elastic member 130 may abut or be fixedly connected to the head 111. The head 111 may be formed in a disc shape. The outer diameter of the head 111 may be greater than or equal to the outer diameter of the elastic member 130, so that the head 111 can limit the movement of the elastic member 130 and prevent the elastic member 130 from passing over the head 111 and detaching from the screw body 110.

[0085] See also Fig. 9 The screw body 110 may include a body portion 112. The body portion 112 may be substantially cylindrical. A circumferential groove 113 may be formed on the body portion 112. The circumferential groove 113 is recessed inward from the outer circumferential surface of the body portion 112 of the screw body 110. The circumferential groove 113 surrounds the outer circumference of the screw body 110 and is located between the head 111 and the threaded portion 115. The circumferential groove 113 may form steps 114 at both ends. The steps 114 may limit the collar 140 so that the movement range of the collar 140 is limited within the range of the circumferential groove 113.

[0086] Continue to see Fig. 9 , the collar 140 can be axially ( Figure 1 The first section 141 and the second section 142 are provided in the upper and lower directions of the collar 140. The outer diameter of the first section 141 may be smaller than the outer diameter of the second section 142. The inner diameter of the first section 141 may be equal to the inner diameter of the second section 142. The inner diameter of the elastic member 130 may be larger than the outer diameter of the first section 141 so that the elastic member 130 may surround the first section 141. The outer diameter of the elastic member 130 may be smaller than or equal to the outer diameter of the second section 142 so as to prevent the elastic member 130 from passing over the second section 142. The upper surface of the second section 142 may be used to abut or connect the lower end (i.e., the other end mentioned above) of the elastic member 130. The collar 140 may have a ring shape as a whole, but the collar 140 may form a gap 143. The gap 143 may extend in the axial direction so that the collar 140 is not formed into a complete ring shape.

[0087] See also Figures 7 to 9 , the collar 140 can be punched after being mounted on the screw body 110 to make the gap 143 as small as possible, and the inner side of the collar 140 can contact the outer surface of the screw body 110. Fig. 9 As shown, since the collar 140 needs to be sleeved on the circumferential groove 113, the inner diameter of the collar 140 needs to be larger than the outer diameter of the main body 112 before the collar 140 is installed on the circumferential groove 113; and after the collar 140 is installed on the circumferential groove 113, the collar 140 needs to be deformed so that its inner diameter is smaller than the outer diameter of the main body 112 to prevent the collar 140 from detaching from the screw body 110. The deformation of the above-mentioned collar can be achieved by stamping, or by other deformation methods. Before deformation, the collar 140 can be annular. After deformation, the collar 140 can be annular, elliptical or irregular in shape. In the case of using stamping to deform the collar 140, the collar 140 can be formed of metal, but the present application is not limited thereto.

[0088] In one embodiment, the collar 140 may be made of an elastic material (eg, plastic). In this case, the collar 140 may be sleeved on the circumferential groove 113 by elastic deformation.

[0089] The head 111 is away from the side of the elastic member 130 (ie, Figure 1 The upper side of the head 111 may have a groove 116. The groove 116 is recessed downward from the upper surface of the head 111. The groove 116 can be used to cooperate with another tool to install the captive screw 100 to the first object, or remove the captive screw 100 from the first object. The groove 116 can be formed in a six-pointed star shape or a six-petal flower shape. Alternatively, the groove 116 can be formed in a triangle, a square, a five-pointed star shape, a cross shape, a hexagon shape, etc. Alternatively, the groove 116 can be formed in an irregular shape.

[0090] See also Figure 10 to Figure 12 , the collar 140 may have a Fig.11 The first position shown and Fig.12 In the first position, the elastic member 130 is slightly compressed (having a first compression amount), while in the second position, the elastic member 130 is more compressed (having a second compression amount greater than the first compression amount).

[0091] See also Fig.11 In the first position, the lower surface of the second section 142 of the collar 140 abuts against the step 114 at the lower end of the circumferential groove 113, so that the collar 140 cannot move further below the screw body 110. The upper surface of the second section 142 of the collar 140 may abut against the elastic member 130. The first position may be a state when the captive screw 100 does not fix the first object and the second object. The upper and lower ends of the elastic member 130 may be formed as planes to facilitate contact with the head 111 and the second section 142 of the collar 140.

[0092] See also Fig.12In the second position, the lower surface of the second section 142 of the collar 140 may abut the second object, the upper surface of the first section 141 may abut the step 114 at the upper end of the circumferential groove 113, and the upper surface of the second section 142 may abut the elastic member 130, so that the collar 140 cannot move further upward. At this time, the elastic member 130 is compressed by the second compression amount, so that the elastic member 130 can apply a certain thrust to the second object. When the cap screw 100 has fixed the first object and the second object together, the collar 140 may be in the first position, the second position, or between the first position and the second position. When the collar 140 is in the first position or between the first position and the second position, the second object is fixed in a floating manner relative to the first object, that is, the second object can overcome the force applied by the elastic member 130 and move relative to the first object along the circumferential groove 113. When the collar 140 is in the second position, the second object is fixed relative to the first object, that is, the second object cannot move relative to the first object along the circumferential groove 113. When the collar 140 is in the second position, the elastic member 130 is compressed to the maximum extent. That is, by using the captive screw 100 of the present application, the first object can be selectively fixedly connected to the second object, or the first object can be floatingly connected to the second object.

[0093] In another embodiment, when the captive screw 100 fixes the first object with the second object, the upper surface of the second section 142 may not abut against the step 114 at the upper end of the circumferential groove 113, or the screw body 110 may not have the circumferential groove 113 and the step 114 at the upper end of the circumferential groove 113 but only has the step 114 at the lower end. In this way, when the captive screw 100 fixes the first object with the second object, the collar 140 can still move upward, thereby fixing the second object in a floating manner (that is, the second object can still move within a certain distance along the axial direction of the screw body 110).

[0094] The second embodiment of the present application will be described below. To avoid repetition, the same parts of the second embodiment as those of the first embodiment will be omitted.

[0095] See also Figures 14 to 20 The captive screw 100 may include a stopper 120. The stopper 120 may be sleeved on the screw body 110. The upper end of the elastic member 130 may abut or be connected to the stopper 120. The second end ( Fig.13 The upper end of the cap screw 100 may have a boss 117. The boss 117 may be used to cooperate with another tool to install the cap screw 100 to the first object, or remove the cap screw 100 from the first object.

[0096] See also Fig.21, the protrusion 117 may have a hexagonal cross section. Alternatively, the cross section of the protrusion 117 may be a triangle, a square, a pentagram, a cross, a hexagon, etc. Alternatively, the cross section of the protrusion 117 may be an irregular shape.

[0097] In this embodiment, the collar 140 may be a complete circular ring, or may be a shape as described in the first embodiment.

[0098] The screw body 110 may have a locking groove 118. The locking groove 118 may be located at the second end ( Fig.13 The stopper 120 is located at the upper end of the projection 117 and below the projection 117. The stopper 120 can be fixed with the locking groove 118. In other words, the stopper 120 can be snapped into the locking groove 118.

[0099] like Fig.21 As shown, the collar 140 can be sleeved onto the body portion 112 of the screw body 110 from above. After that, the stopper 120 is also sleeved onto the locking groove 118 of the screw body 110 to prevent the collar 140 from leaving the screw body 110, so after the collar 140 is sleeved onto the body portion 112, the collar 140 does not need to be deformed.

[0100] The retaining piece 120 may be formed in a ring shape and include an outer peripheral portion 121, a bent portion 122, and an inner peripheral portion 123. The bent portion 122 may be located between the outer peripheral portion 121 and the inner peripheral portion 123. The bent portion 122 may be angled relative to any one of the outer peripheral portion 121 and the inner peripheral portion 123. The outer peripheral portion 121 may be parallel to the inner peripheral portion 123. It is understood that in another embodiment, the retaining piece 120 may have other shapes, for example, a flat plate shape.

[0101] See also Fig.21 , the inner circumference 123 may have a plurality of protruding pieces 124 (or finger-shaped parts) extending inward. The stopper 120 may be fixed to the locking groove 118 by means of the plurality of protruding pieces 124. Specifically, the plurality of protruding pieces 124 may abut against the outer surface of the locking groove 118 and deform, thereby generating friction between the plurality of protruding pieces 124 and the locking groove 118 to prevent the stopper 120 from moving relative to the screw body 110. As an example, the inner circumference 123 may have six protruding pieces 124, but the present application is not limited thereto.

[0102] The outer diameter of the stopper 120 may be greater than or equal to the outer diameter of the elastic member 130. In this way, the stopper 120 can limit the movement of the elastic member 130 and prevent the elastic member 130 from passing over the stopper 120 and detaching from the screw body 110. Compared with the outer peripheral portion 121, the inner peripheral portion 123 may be further away from the elastic member 130, so that the stopper 120 is formed into a hat-like shape to cover the upper end of the elastic member 130. The strength is improved by bending 122, and a flat shape is also acceptable if the strength is sufficient.

[0103] See also Figure 21 to Figure 24 In this embodiment, the screw body 110 may have only one step 114 to define the position of the lowest end of the collar (the first position). That is, in this embodiment, the screw body 110 may not have the circumferential groove 113. Alternatively, the screw body 110 may have the circumferential groove 113 as in the first embodiment, and steps 114 may be formed at the upper and lower ends of the circumferential groove 113.

[0104] See also Fig.23 and Fig.24 , the length of the locking groove 118 along the axial direction of the screw body 110 may be greater than the thickness of the stopper 120 . In another embodiment, the length of the locking groove 118 along the axial direction of the screw body 110 may be equal to the thickness of the stopper 120 .

[0105] See also Fig.23 In the first position, the lower surface of the collar 140 abuts against the step 114, so that the collar 140 cannot move further below the screw body 110. The upper surface of the collar 140 abuts against the elastic member 130. The first position may be a state where the captive screw 100 does not fix the first object and the second object.

[0106] See also Fig.24 In the second position, the lower surface of the collar 140 can abut against the second object, and the upper surface of the collar 140 can abut against the elastic member 130. At this time, the elastic member 130 is compressed, so that the elastic member 130 can apply a certain thrust to the second object. As long as the elastic member 130 is not completely compressed, the second object can still overcome the elastic force of the elastic member 130 and move upward. The second position can be a state where the captive screw 100 has fixed the first object and the second object.

[0107] The other contents of the second embodiment can refer to the first embodiment. It can be understood that, in the absence of conflict, some elements or structures in the first embodiment can be used in the second embodiment, and vice versa.

[0108] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims of the present application.

[0109] Although the present application has been described with reference to typical embodiments, the terms used are illustrative and exemplary rather than restrictive. Since the present application can be implemented in various forms without departing from the spirit and essence of the present application, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be interpreted in the broadest sense within the scope defined by the claims, so all changes falling within the claims or their equivalents should be covered by the claims.

Claims

1. A cap screw, characterized in that: The captive screw comprises: A screw body, wherein a first end of the screw body is used to be fixed to a first object; an elastic member, one end of which contacts the second end of the screw body, and the other end of which is movable relative to the screw body; a collar, the collar being fixed to the other end of the elastic member and being used for abutting against a second object, Wherein, the second object is floatingly located between the collar and the first object.

2. The captive screw according to claim 1, characterized in that The collar is sleeved on the screw body, the elastic member is a coil spring, and the coil spring surrounds the screw body.

3. The captive screw according to claim 2, characterized in that One end of the elastic member is fixedly connected to the second end of the screw body, a thread is formed on the first end of the screw body, and the screw body passes through a hole on the second object and is fixed to the first object by means of the thread.

4. The captive screw according to claim 3, characterized in that The collar has a first position in which the resilient member is compressed by a first amount of compression and a second position in which the resilient member is compressed by a second amount of compression greater than the first amount of compression.

5. The captive screw according to claim 4, characterized in that When the screw body passes through the hole on the second object and is fixed to the first object, the collar is in the first position, the second position, or between the first position and the second position.

6. The captive screw according to claim 5, characterized in that The screw body has a circumferential groove, and steps are formed at both ends of the circumferential groove. The ring is limited in the circumferential groove so that the steps at both ends of the circumferential groove correspond to the first position and the second position of the ring respectively.

7. The captive screw according to claim 5, characterized in that The screw body has a step that blocks the collar such that the step corresponds to a first position of the collar.

8. The captive screw according to claim 5, characterized in that The screw body has a step that blocks the collar so that the step corresponds to the second position of the collar.

9. The captive screw according to claim 2, characterized in that: The collar has a gap.

10. The captive screw according to claim 9, characterized in that The collar is in a circular ring shape, and the inner side of the collar contacts the outer peripheral surface of the screw body.

11. The captive screw according to claim 2, characterized in that The collar includes a first section and a second section in the axial direction, the outer diameter of the first section is smaller than the outer diameter of the second section, and the second section of the collar abuts against the second object.

12. The cap screw according to any one of claims 1 to 11, characterized in that The second end of the screw body includes a head, and one end of the elastic member is fixedly connected to the head.

13. The captive screw according to claim 12, characterized in that The outer diameter of the head is greater than or equal to the outer diameter of the elastic member.

14. The captive screw according to claim 13, characterized in that The head has a groove on one side away from the elastic member.

15. The captive screw according to claim 14, characterized in that The groove is formed in a hexagonal star shape.

16. A cap screw according to any one of claims 1 to 11, characterized in that The bolt-type screw comprises a stopper, the screw body has a locking groove, and the stopper is sleeved on the screw body and fixed to the locking groove.

17. The captive screw according to claim 16, characterized in that The retaining piece includes an outer peripheral portion, a bent portion, and an inner peripheral portion, wherein the bent portion is located between the outer peripheral portion and the inner peripheral portion and forms an angle with respect to any one of the outer peripheral portion and the inner peripheral portion.

18. The captive screw according to claim 17, characterized in that The inner peripheral portion has a plurality of protruding pieces extending inwardly, and the stopper is fixed to the locking groove by means of the plurality of protruding pieces.

19. The captive screw according to claim 16, characterized in that The outer diameter of the stopper is greater than or equal to the outer diameter of the elastic member.

20. The captive screw according to claim 16, characterized in that The second end of the screw body has a protruding column.

21. The captive screw according to claim 20, characterized in that The protruding column has a hexagonal cross section.

22. The captive screw according to claim 1, characterized in that The first object is a server rack, and the second object is a wiring harness connector.

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