CN209388703U - A kind of tone arm and phonograph - Google Patents

Abstract

The utility model discloses a kind of tone arm and phonograph, which includes tone arm pedestal, the tone arm shaft connecting with tone arm pedestal and be arranged in tone arm shaft and can sing bar with what tone arm shaft rotated；The tone arm shaft includes: the outline border being vertically fixed on tone arm pedestal, and the first longitudinally disposed limit hole is respectively equipped in the two sides lateral side plate of the outline border；Inside casing in outline border is set, the second limit hole being laterally arranged is respectively equipped on the two sides longitudinal side plate of the inside casing；It is socketed in the pipe sleeve sung on bar, which is arranged among inside casing；And between each first limit hole and the lateral side plate of inside casing and each second limit hole and pipe sleeve are equipped with axially stop block.The utility model improves with the arm pivoted structure of singing for singing that bar is connected by improving and sings arm pivoted sensitivity and service life.

Description

A kind of tone arm and phonograph

Technical field

The utility model relates to phonograph fields, more particularly, to a kind of tone arm and phonograph.

Background technique

It includes: tone arm pedestal that Chinese patent CN2017200846334, which discloses a kind of tone arm and its phonograph, the tone arm,；With institute State the connection of tone arm pedestal, the tone arm shaft with the first rotary shaft；Bar is sung at least one bending section；The bar of singing has The both ends being staggered, the one end for singing bar are fixedly connected with pickup；The other end for singing bar is arranged in the tone arm shaft, turns with tone arm Axis rotation；It is connected to the regulating mechanism for singing the one end of bar far from pickup；The center of gravity of bar is sung described in the regulating mechanism adjustment To change pickup height.However, that there are sensitivity is lower, service life is shorter needs the defects of regularly replacing for the tone arm shaft.

Utility model content

In order to overcome the drawbacks of the prior art, the utility model proposes a kind of tone arm and phonographs, by improving and singing bar It is connected sing arm pivoted structure and improve sing arm pivoted sensitivity and service life.

The utility model adopts the following technical solution realizes: a kind of tone arm is connect including tone arm pedestal, with tone arm pedestal Tone arm shaft and it is arranged in tone arm shaft and bar can be sung with what tone arm shaft rotated；The tone arm shaft includes: longitudinally fixed Outline border on tone arm pedestal is respectively equipped with the first longitudinally disposed limit hole in the two sides lateral side plate of the outline border；Setting exists Inside casing in outline border is respectively equipped with the second limit hole being laterally arranged on the two sides longitudinal side plate of the inside casing；It is socketed in and sings on bar Pipe sleeve, the pipe sleeve be arranged inside casing among；And between each first limit hole and the lateral side plate of inside casing and it is each second limit Position hole and pipe sleeve are equipped with axially stop block.

Wherein, axially stop block includes: the embedding bearing cap for being set on the first limit hole or the second limit hole, the bearing The medial surface of lid has holding tank；Jewel bearing in holding tank；Needle point is located at the thimble in jewel bearing facial pocket, Thimble correspondence is fixed in the lateral side plate or pipe sleeve of inside casing.

The utility model discloses a kind of phonograph, including at least shock-absorbing support seat, is used to place on shock-absorbing support seat Disc record and turntable, pickup and the main shaft set on center of turntable for driving disc record to rotate are equipped with described sing in shock-absorbing support seat Arm, wherein pickup is fixed on the end for singing bar.

Wherein, shock-absorbing support seat includes multiple columns, the bottom plate being fixed on column and the chassis on bottom plate, each Damping is equipped between column and chassis, which specifically includes elastic portion and damping elastic slice, the elastic portion it is upper End is fixedly linked with column, and the lower end of the first end of damping elastic slice and elastic portion, which suspends in midair, to be arranged, and the of the damping elastic slice The bottom side on two ends and chassis is fixedly linked to provide support to chassis and fix.

Wherein, elastic portion is damping spring, steel wire or stranded steel cable, and damping elastic slice is the multiple pieces of steel being superposed.

Wherein, column includes cylinder equipped with accommodating chamber and the end and can the tune that moves up and down of counter-cylinder on cylinder Lid is saved, elastic portion is arranged in accommodating chamber and the upper end of elastic portion is fixedly linked with lid is adjusted.

Wherein, it adjusts to screw togather between lid and end on cylinder and be connected.

Wherein, the lower end of cylinder is additionally provided with adjustable foot nail.

Wherein, the bottom of turntable is equipped with filled cavity, is equipped with shock-absorbing filler in the filled cavity.

Wherein, which is epoxy resin, cork, flexible glue or quartz sand.

Compared with prior art, the utility model has the following beneficial effects:

The utility model, which improves, sings arm pivoted structure in tone arm, filled by one group of longitudinally disposed axial limiting of setting It sets and one group of axially stop block being laterally arranged, all-direction rotation can be carried out with respect to tone arm pedestal to allow and sing bar, thus Meet and sings the needs that bar drives pickup all-direction rotation；And the treasured that hardness is higher, coefficient of friction is low is used in axially stop block Stone bearing, so that the high sensitivity that the needle point of thimble rotates in the depression on jewel bearing surface, allows tone arm to have high sensitivity The sound quality and details for being conducive to be promoted disc in playing process are abundant, and abrasion hardly occurs for jewel bearing to use the longevity Life length.Furthermore using in the phonograph of above-mentioned tone arm, phonograph also is reduced or eliminated due to certainly by the way that shock-absorbing support seat is arranged Periodic perturbations or temporary impact caused by body operation or external shadow reason, the intrinsic vibration frequency that entire phonograph can be improved are allowed to Compulsive vibration frequency caused by leaving because of external interference, especially damping elastic slice are that the multiple pieces of steel being superposed helps to absorb Vibration and damping are to promote the damping effect of phonograph, so that phonograph be avoided to generate resonance phenomenon to ensure energy in playing process Generate the sound of high-quality.

Detailed description of the invention

Fig. 1 is the schematic perspective view of tone arm in one embodiment.

Fig. 2 is a longitudinal section of tone arm to reflect the schematic diagram for singing arm pivoted internal structure.

Fig. 3 is the decomposition texture schematic diagram of axially stop block.

Fig. 4 is the structural schematic diagram of phonograph one embodiment.

Fig. 5 is the schematic perspective view of damping column.

Fig. 6 is structural schematic diagram of the phonograph of corresponding diagram 4 in the case where overlooking visual angle.

Fig. 7 is the schematic diagram of the section structure of the central axes Fig. 6 A-A.

Specific embodiment

Further to illustrate that the application is the technical means and efficacy reaching predetermined purpose and being taken, below in conjunction with attached drawing And preferred embodiment, to specific embodiment, structure, feature and its effect according to the application, detailed description is as follows.Following In explanation, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.In addition, in one or more embodiments Special characteristic, structure or feature can be combined by any suitable form.

In conjunction with shown in Fig. 1-Fig. 3, the utility model discloses a kind of tone arm 9, which includes: tone arm pedestal 91；With it is described The tone arm shaft 92 that tone arm pedestal 91 connects；What first end was fixedly connected with pickup 8 sings bar 93, and the second end for singing bar 93 is set The second end that setting in the tone arm shaft 92 and can rotate 360 ° with tone arm shaft 92, and sing bar 93, which is additionally provided with, to be used for The center of gravity of bar 93 is sung described in adjustment to change the regulating mechanism 94 of 8 height of pickup.

Compared to existing technologies, such as compared to for Chinese patent CN2017200846334, the utility model is changed The specific structure of tone arm shaft 92 improves the sensitivity and service life of tone arm shaft 92.Specifically, tone arm shaft 92 is wrapped Include: the outline border 921 being vertically fixed on tone arm pedestal 91 is respectively equipped in the two sides lateral side plate of the outline border 921 longitudinally disposed The first limit hole 9211；Inside casing 922 in outline border 921 is set, is respectively equipped with cross on the two sides longitudinal side plate of the inside casing 922 To the second limit hole 9221 of setting；It is socketed in the pipe sleeve 923 sung on bar 93, which is arranged among inside casing 922；Each Between first limit hole 9211 and the lateral side plate of inside casing 922 and each second limit hole 9221 and pipe sleeve 923 are equipped with axis To limiting device.

Especially as shown in Fig. 2 and Fig. 3.Axially stop block includes: bearing cap 924, and the medial surface of the bearing cap 924 has Holding tank 9241；Jewel bearing 925 in holding tank 9241, jewel bearing 925 are with jewel (usually sapphire) etc. Sliding bearing made of hard material, surface, which has, is carefully ground a coniform depression；Needle point is located at jewel bearing Thimble 926 in 925 facial pockets.It is set in the first limit hole 9211 when bearing cap 924 is embedding, thimble 926 is fixed at this time In the lateral side plate of inside casing 922.It is set in the second limit hole 9221 when bearing cap 924 is embedding, at this point, thimble 926 is fixed On pipe sleeve 923.

Therefore, it is rotated in the depression on 925 surface of jewel bearing according to the needle point of thimble 926, so that it may flexible to realize Pipe sleeve 923 is with respect to the lateral rotation between inside casing 922 and longitudinally rotating between the opposite outline border 921 of inside casing 922, therefore this is practical The axial limiting dress that novel tone arm shaft 92 is laterally arranged by one group of longitudinally disposed axially stop block of setting and one group It sets, all-direction rotation can be carried out with respect to tone arm pedestal 91 to allow and sing bar 93, drive pickup 8 comprehensive to meet and sing bar 93 The needs of rotation.In addition, since the hardness of jewel bearing 925 is higher, so that the needle point of thimble 926 is on 925 surface of jewel bearing Depression in rotation, the coefficient of friction on 925 surface of jewel bearing is low to high sensitivity, and jewel bearing 925 is hardly sent out Raw abrasion is to long service life.

Furthermore in conjunction with shown in Fig. 4 and Fig. 6, the utility model discloses a kind of phonograph, includes at least: shock-absorbing support seat；If Set turntable 4, tone arm 9 and the singing positioned at 9 end of tone arm on shock-absorbing support seat for placing disc record and disc record being driven to rotate First 8, which is equipped with main shaft 5, and the upper end of the main shaft 5 is equipped with for disc record to be pressed on 4 town Shang Die of turntable 6.Therefore, the upper end that disc record is set in main shaft 5 is placed on turntable 4 to be driven by turntable 4 and is rotated, thus on pickup 8 The piece line sounding of stylus friction disc.

Wherein, the specific structure and working principle of main shaft 5, refers to Chinese patent application CN2017206637205's Technical solution, this will not be detailed here.

Further combined with shown in Fig. 5 and Fig. 7.Shock-absorbing support seat specifically includes multiple columns 1, the bottom being fixed on column 1 Plate 2 and the chassis 3 on bottom plate 2, and damping is equipped between each column 1 and chassis 3.The damping specifically wraps Elastic portion 13 and damping elastic slice 15 are included, upper end and the column 1 of the elastic portion 13 are fixedly linked, the first end of damping elastic slice 15 It suspends in midair and is arranged with the lower end of elastic portion 13, the second end of the damping elastic slice 15 is equipped with fixation hole 151, solid using screw etc. Determine element and the bottom side of the second end of damping elastic slice 15 and chassis 3 is fixedly linked to be subtracted by each across fixation hole 151 Shake elastic slice 15 provides chassis 3 to support and fixes, it is ensured that chassis 3 will not be shaken as far as possible.Wherein, tone arm pedestal 91 is fixed on bottom On disk 3.

In one embodiment, elastic portion 13 is that damping spring, steel wire or stranded steel cable etc. have enough rigidity and have The component of certain drawing force.Elastic portion 13 it is preferable to use damping spring, by the rigidity of damping spring and the starting force of stretching with Periodic perturbations or temporary impact caused by phonograph is reduced or eliminated due to self-operating or external shadow, can be improved entire electricity Compulsive vibration frequency caused by the intrinsic vibration frequency of phonograph makes it away from because of external interference, so that phonograph be avoided to generate resonance Phenomenon is to ensure to generate the sound of high-quality in playing process.

In one embodiment, damping elastic slice 15 is steel disc, and the quantity of steel disc is multi-disc, it is preferable to use multiple pieces of steel is superimposed Damping elastic slice 15 is constituted together.Since steel disc itself has the function of enough rigidity and elastic shock attenuation, thus an end of steel disc End is connected by the lower end suspention of elastic portion 13 passes to turntable 4 to reduce or eliminate exterior vibrations such as carrying out self-stabilised post 1, thus really The stationarity for protecting turntable 4 avoids phonograph from generating resonance phenomenon to ensure to generate the sound of high-quality in playing process.

In one embodiment, column 1 includes cylinder 11 equipped with accommodating chamber 111 and is set to end and can phase on cylinder 11 To the adjusting lid 12 that cylinder 11 moves up and down, elastic portion 13 be arranged in accommodating chamber 111 and the upper end of elastic portion 13 and adjust Section lid 12 is fixedly linked.It is connected for example, adjusting and being screwed togather between lid 12 and end on cylinder 11, therefore, when rotation adjusts lid The upper and lower position of elastic portion 13 can be changed when body 12 to adjust the height of damping elastic slice 15 to adjust the height of each section of turntable 4 Degree, it is ensured that turntable 4 can be horizontally disposed with as far as possible.

In one embodiment, the lower end of cylinder 11 is additionally provided with adjustable foot nail 16, can be changed by adjusting adjustable foot nail 16 Become the relative altitude of cylinder 11, and provides realization condition to adjust the high consistency of each section of turntable 4.

In one embodiment, the bottom of turntable 4 is equipped with filled cavity 41, is equipped with shock-absorbing filler in the filled cavity 41, should Shock-absorbing filler is such as that epoxy resin, cork, flexible glue or quartz sand etc. are inhaled by shock-absorbing filler interaction dynamic balance Itself or exterior vibration are received, travel to vibration cannot elsewhere, so that 4 held stationary of turntable be allowed to provide condition.

The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application Made any modifications, equivalent replacements, and improvements etc., should be included within the scope of protection of this application within mind and principle.

Claims (10)

1. a kind of tone arm, including tone arm pedestal, the tone arm shaft being connect with tone arm pedestal and it is arranged in tone arm shaft and can Bar is sung with the rotation of tone arm shaft；It is characterized in that, the tone arm shaft includes: the outline border being vertically fixed on tone arm pedestal, it should The first longitudinally disposed limit hole is respectively equipped in the two sides lateral side plate of outline border；Inside casing in outline border is set, the inside casing The second limit hole being laterally arranged is respectively equipped on the longitudinal side plate of two sides；It is socketed in the pipe sleeve sung on bar, which is arranged inside casing Among；And between each first limit hole and the lateral side plate of inside casing and each second limit hole and pipe sleeve are equipped with axial limit Position device.

2. tone arm according to claim 1, which is characterized in that axially stop block includes: embedding to be set on the first limit hole Or second limit hole bearing cap, the medial surface of the bearing cap has holding tank；Jewel bearing in holding tank；Needle point position Thimble in jewel bearing facial pocket, thimble correspondence are fixed in the lateral side plate or pipe sleeve of inside casing.

3. a kind of phonograph is used to place disc record and disc record is driven to turn including at least shock-absorbing support seat, on shock-absorbing support seat Dynamic turntable, pickup and the main shaft set on center of turntable, which is characterized in that be equipped with such as claim 1 in shock-absorbing support seat Or 2 tone arm, wherein pickup is fixed on the end for singing bar.

4. phonograph according to claim 3, which is characterized in that shock-absorbing support seat includes multiple columns, is fixed on column Bottom plate and the chassis on bottom plate, be equipped with damping between each column and chassis, which specifically includes Elastic portion and damping elastic slice, upper end and the column of the elastic portion are fixedly linked, the first end of damping elastic slice and elastic portion Lower end suspention setting, the second end of the damping elastic slice and the bottom side on chassis are fixedly linked solid to provide support to chassis It is fixed.

5. phonograph according to claim 4, which is characterized in that elastic portion is damping spring, steel wire or stranded steel cable, damping Elastic slice is the multiple pieces of steel being superposed.

6. phonograph according to claim 4, which is characterized in that column includes being equipped with the cylinder of accommodating chamber and being set on cylinder End and can the adjusting lid that moves up and down of counter-cylinder, elastic portion is arranged in accommodating chamber and the upper end of elastic portion and adjusts Lid is fixedly linked.

7. phonograph according to claim 6, which is characterized in that screw togather and be connected between adjusting lid and end on cylinder.

8. phonograph according to claim 6, which is characterized in that the lower end of cylinder is additionally provided with adjustable foot nail.

9. according to any one of the claim 3-8 phonograph, which is characterized in that the bottom of turntable is equipped with filled cavity, this is filled out It fills intracavitary equipped with shock-absorbing filler.

10. phonograph according to claim 9, which is characterized in that the shock-absorbing filler be epoxy resin, cork, flexible glue or Quartz sand.