CN2816457Y

CN2816457Y - Rotation damper with preforce

Info

Publication number: CN2816457Y
Application number: CN 200520040136
Authority: CN
Inventors: 施正泰
Original assignee: Shanghai Huanda Computer Technology Co Ltd; Mitac Technology Corp
Current assignee: Shanghai Huanda Computer Technology Co Ltd; Getac Technology Corp
Priority date: 2005-03-15
Filing date: 2005-03-15
Publication date: 2006-09-13
Anticipated expiration: 2015-03-15

Abstract

The utility model relates to a rotation damper having pre-force. A torsion spring is sheathed with a rotation shaft of rotation damping so that the torsion spring is respectively butted with a rotation damper base and the rotation shaft. Elastic resetting force of the torsion spring releases elastic energy stored by advanced torsion to push the rotation shaft so that the rotation shaft has rotation twisting force.

Description

Rotation damper with pre-power

Technical field

The utility model is relevant for a kind of rotary damping device in order to actuation gear and tooth bar, particularly about a kind of rotation damper with pre-power.

Background technique

Please in conjunction with shown in Figure 1, rotation damper on the known door closure that is applied to electrical products 3 (specifically can be with reference to No. the 227776th, TaiWan, China patent, No. 287601) all have a base and a running shaft usually, this running shaft is hubbed on this base, viscous fluid is filled between this base and this running shaft, make and bear a viscosity impedance in the running shaft rotation process and unlikely rotation is too fast, this running shaft end is a gear part 1, it is in order to cooperate with a tooth bar 2 or rack rails, thereby in order to open or close door closure 3, for reaching the effect of pushing or closing door closure 3 automatically open, add a torque spring 4 so that preload torsion to be provided by a side in the prior art at this rotation damper, need to be equipped with projection 5 structures of sheathed this torque spring 4 simultaneously, the engaging post 6 that these torque spring 5 two ends of contact are used, 7 etc., so when opening door closure 3, this torque spring 4 deforms, and stored energy is when closing door closure 3, this this torque spring 5 resiles, thereby makes door closure 3 shut automatically.Though said structure can provide preload torsion, but there is following deficiency, being provides preload torsion, one torque spring 4 need be provided separately, also need to consider the allocation problem of this torque spring 4 simultaneously, as projection 5 structures of occupied inner space, sheathed this torque spring 4, engaging post 6,7 that these torsion spring 5 two ends of contact are used or the like, thus the inconvenience in increase design and the assembly process.

Summary of the invention

In view of above problem, main purpose of the present utility model is to provide a kind of rotation damper with pre-power, so that rotation damper has preload torsion, do not need to add again spring and combined by being turned structure, can simplified design and construction process, avoid producing restriction in the design because consider the allocation problem of torque spring.

Therefore, for reaching above-mentioned purpose, the disclosed a kind of rotation damper of the utility model with pre-power, include: a base has at least one pin-joint part; One running shaft has at least one shaft, uses for this running shaft to be articulated on this pin-joint part, and this running shaft can be rotated with respect to this base; And a torque spring, be sheathed on this running shaft, be resisted against this base and this running shaft respectively, in order to the storage elasticity energy, promote this running shaft and make its torsion that rotates.

Compare with the prior art scheme, the utility model has the advantages that the structure that preload torsion will be provided is integrated on the rotation damper, do not need design separately that the structure of preload torsion is provided, promptly do not need additionally to be provided with the convex cylinder of sheathed this torque spring, engaging post that these torsion spring two ends of contact are used or the like, and do not need to occupy in addition the inner space yet, so make the pin-jointed structure of electronic equipment door closure etc. easier, thereby simplified design and assembly process.

Description of drawings

Fig. 1 knows the enforcement schematic representation of rotation damper for oneself.

Fig. 2 is the exploded perspective view of the utility model first preferred embodiment.

Fig. 3 is the stereogram of the utility model first preferred embodiment.

Fig. 4 is the enforcement schematic representation of the utility model first preferred embodiment.

Fig. 5 is the exploded perspective view of the utility model second preferred embodiment.

Fig. 6 is the stereogram of the utility model second preferred embodiment.

Embodiment

See also Fig. 2 to shown in Figure 4, the utility model one preferred embodiment provides a kind of rotation damper 10 with pre-power, it includes a base 11, a running shaft 12 and a torque spring 13, wherein: this base 11 has a base plate 111 and a pin-joint part 112, this base plate lll is a plate, have some locks on it and establish hole llla, these locks are established hole 111a and are used for this base plate 111 and be locked on the plane, this base 11 is fixed in the position of predetermined set, and this pin-joint part 112 is arranged at this base plate

One lateral margin has at least one pivoted hole 112a and one first and plugs hole 112b, this pivoted hole 112a on this pin-joint part 112 Central axis is parallel with this base plate 111, and this pin-joint part 112 is filled with viscous fluid in this pivoted hole 112a.

This running shaft 12 includes a shaft 121 and a gear part 122 of coaxial rotation, this shaft 121 is inserted in this pivoted hole 111a, make this running shaft 121 be articulated in this pin-joint part 112 with the state that central axis is parallel to this base plate 111, and can be rotated with respect to this base 11, have one second on this gear part 122 and plug hole 122a, these gear part 122 usefulness are sticked in the tooth bar 21 or the rack rails (figure does not show) of a door closure 20, make and utilize this gear part 122 to drive these tooth bar 21 interlocks in these running shaft 12 rotation processes, again, in these running shaft 12 rotation processes, with the viscous fluid contact friction in this pin-joint part 112, form the viscosity impedance effect, reduce these running shaft 12 rotating speeds to avoid rotating speed too fast.

This torque spring 13 has the two relative portions that plug 131, this torque spring 13 is sheathed on the shaft 121 of this running shaft 12, and between this gear part 122 and pin-joint part 112, this two plugs portion 131 and discloses respectively and be located at this and first disclose and establish hole 111b and second and plug hole 122a, this torque spring 13 is resisted against respectively between this base 11 and this running shaft 12, with the elastic top of utilizing this torsion spring 13 usefulness instead, make this running shaft 12 produce rotary torsions with respect to this base 11.

By above-mentioned component composition, form the torsion spring 10 with pre-power of the present utility model, reverse this running shaft 12 during practical set in advance, this torsion spring 13 is reversed and the storage elasticity energy, then again this base 11 is fixed in the precalculated position, make this gear part 122 just engageable in this tooth bar 21, usually this tooth bar 21 (or rack rails) is fixed in the lateral margin of this door closure 20, when this gear part 122 is subjected to this torsion spring 13 and turns, can promote the place near the steps tooth bar simultaneously moves and drives place near the steps door closure 20 and move, after place near the steps door closure 20 is subjected to original fixed mechanism release, this torsion spring 13 just drives this gear part 122 and rotates together with this running shaft 12, make this gear part 122 drive this tooth bar 21, this door closure 20 just can be reached the action of uncapping towards predetermined direction swing.

And when promoting this door closure 20 in the other direction and close with external force, this tooth bar 21 just can this gear part 122 of reverse rotation, makes this torsion spring 13 storage elasticity energy once again, produces elastic restoring force as the usefulness of pushing this door closure 20 open next time.

And the viscosity impedance effect of 11 of this running shaft 12 and this bases can effectively reduce the rotational velocity of this running shaft 12, avoids these door closure 20 closing velocities too fast, produces excessive collision power, causes the damage of this door closure 20 or peripheral member.

Please consult Fig. 5 and shown in Figure 6 again, a kind of rotation damper 30 that is provided for the utility model second preferred embodiment with pre-power, itself and first preferred embodiment are roughly the same, have a base 31, a running shaft 32 and a torsion spring 33, this base 31 includes a base plate 311 and a pin-joint part 312, this base plate 311 is two plates, is stretched on this pin-joint part 312 lateral margins respectively, and vertical with the pivoted hole 312a central axis of this pin-joint part 312; This running shaft 32 has a shaft 321 and a gear part 322, this running shaft 32 is inserted in this pivoted hole 312a with this shaft 322, this running shaft 32 is hubbed on this pin-joint part 312 with the state of central axis perpendicular to this base plate 311, this torsion spring 33 is sheathed on this running shaft 32, and be resisted against this base 31 and this running shaft 32 respectively, use so that this running shaft 32 produces rotary torsions with respect to this base 31; Present embodiment is that with the difference of first preferred embodiment this base plate 311 and this pin-joint part 312 kenels and relativeness are different, applicable to different spatial configuration demands.

Claims

1, a kind of rotation damper with pre-power is characterized in that including:

One base has at least one pin-joint part;

One running shaft has at least one shaft, and this running shaft is articulated on this pin-joint part, is rotated with respect to this base; And

One torque spring is sheathed on this running shaft, is resisted against this base and this running shaft respectively.

2, the rotation damper with pre-power as claimed in claim 1 is characterized in that, this base more includes a usefulness so that this rotation damper with pre-power is fixed in the base plate of the position of predetermined set.

3, the rotation damper with pre-power as claimed in claim 2 is characterized in that, has more on this base plate somely to be locked on a plane for this base Lock is established the hole.

4, the rotation damper with pre-power as claimed in claim 2 is characterized in that, this base plate is a plate, and this pin-joint part is arranged at a side of this base plate.

5, the rotation damper with pre-power as claimed in claim 4 is characterized in that, this pin-joint part has more the pivoted hole of using the shaft for this running shaft to plug, and the central axis of this running shaft is parallel to this base plate.

6, the rotation damper with pre-power as claimed in claim 2 is characterized in that, this base plate is two plates, is stretched on this pin-joint part lateral margin respectively.

7, the rotation damper with pre-power as claimed in claim 6 is characterized in that, this pin-joint part has more the pivoted hole of using the shaft for this running shaft to plug, and the central axis of this running shaft is perpendicular to this base plate.

8, the rotation damper with pre-power as claimed in claim 1 is characterized in that, this pin-joint part has more the pivoted hole of using the shaft for this running shaft to plug.

9, the rotation damper with pre-power as claimed in claim 1 is characterized in that, this running shaft more includes a gear part, itself and this rotating shaft coaxle to, this gear part is embedded in a tooth bar or rack rails.

10, the rotation damper with pre-power as claimed in claim 1 is characterized in that, is filled with viscous fluid in this pin-joint part.

11, the rotation damper with pre-power as claimed in claim 1, it is characterized in that having one first on this base and plug the hole, have one second on this running shaft and plug the hole, this torque spring has the two relative portions that plug, and is inserted in this respectively and first and first plugs the hole.